Digital SAT Flashcards: Math, Grammar & Words in Context

Šio rinkinio kortelės

1. 1 kortelė

   Klausimas

   Central idea of a passage?

   Atsakymas

   The passage's main claim or controlling point. It should cover the whole passage, not one striking detail.

2. 2 kortelė

   Klausimas

   The shade trees mitigated the midday heat. Meaning of “mitigated”?

   Atsakymas

   Reduced. The trees made the heat less severe.

3. 3 kortelė

   Klausimas

   The first plan was affordable. However, it took twice as long. What relationship does “However” signal?

   Atsakymas

   Contrast. The second statement differs from or qualifies the first.

4. 4 kortelė

   Klausimas

   Three standard joins for two independent clauses?

   Atsakymas

   A period, a semicolon, or a comma plus a coordinating conjunction. Each side must be a complete sentence.

5. 5 kortelė

   Klausimas

   Best supporting detail?

   Atsakymas

   The detail that most directly proves the claim. Relevance matters more than how vivid or surprising it is.

6. 6 kortelė

   Klausimas

   A second archive corroborated the diary's date. Meaning of “corroborated”?

   Atsakymas

   Confirmed with supporting evidence.

7. 7 kortelė

   Klausimas

   Every member of set A is even. Nine is odd; therefore, nine is not in set A. What relationship does “therefore” signal?

   Atsakymas

   Conclusion from a reason. The final statement follows logically from the stated premises.

8. 8 kortelė

   Klausimas

   Introductory dependent clause before a main clause?

   Atsakymas

   Use a comma after the dependent clause. Example: “Although rain fell, the match continued.”

9. 9 kortelė

   Klausimas

   Valid inference?

   Atsakymas

   A conclusion that must follow, or that most reasonably follows, from the stated evidence. Avoid assumptions the text never supports.

10. 10 kortelė

    Klausimas

    The team called its result tentative until replication. Meaning of “tentative”?

    Atsakymas

    Provisional or not yet certain.

11. 11 kortelė

    Klausimas

    Several materials block sound. For example, thick felt absorbs echoes. What relationship does “For example” signal?

    Atsakymas

    Illustration. The second statement gives a specific case of the broader point.

12. 12 kortelė

    Klausimas

    Singular subject with an intervening prepositional phrase?

    Atsakymas

    Use a singular verb. Example: “The box of samples is sealed.” The phrase “of samples” does not change the subject.

13. 13 kortelė

    Klausimas

    Strongest textual evidence?

    Atsakymas

    The quotation or detail that most directly supports the target claim, with the fewest extra assumptions.

14. 14 kortelė

    Klausimas

    The error had a negligible effect on the total. Meaning of “negligible”?

    Atsakymas

    So small that it is not important.

15. 15 kortelė

    Klausimas

    The first route avoids steep hills. Similarly, the second stays nearly level. What relationship does “Similarly” signal?

    Atsakymas

    Similarity. The second statement matches the first in a relevant way.

16. 16 kortelė

    Klausimas

    Opening modifier placement?

    Atsakymas

    Place the noun being modified immediately after the opening phrase. Example: “Walking home, Lena noticed the mural.”

17. 17 kortelė

    Klausimas

    Quantitative evidence for a claim?

    Atsakymas

    Use the value, comparison, or trend that directly tests the claim, including the correct units and baseline.

18. 18 kortelė

    Klausimas

    The lab used a conventional method before testing a new one. Meaning of “conventional”?

    Atsakymas

    Traditional or commonly accepted.

19. 19 kortelė

    Klausimas

    Mira checked the figures. Meanwhile, Omar revised the caption. What relationship does “Meanwhile” signal?

    Atsakymas

    Simultaneous events. The second event happens at the same time as the first.

20. 20 kortelė

    Klausimas

    Singular possessive noun?

    Atsakymas

    Usually add apostrophe + s. Example: “the scientist's notebook.”

21. 21 kortelė

    Klausimas

    Trend in a table or graph?

    Atsakymas

    State what changes, in which direction, and across which interval. Do not turn a pattern into a cause without evidence.

22. 22 kortelė

    Klausimas

    The essay offered a novel explanation for the pattern. Meaning of “novel”?

    Atsakymas

    New or original in this context.

23. 23 kortelė

    Klausimas

    The device was old. Nevertheless, it performed reliably. What relationship does “Nevertheless” signal?

    Atsakymas

    Concession. The second statement remains true despite the limitation in the first.

24. 24 kortelė

    Klausimas

    Parallel items in a series?

    Atsakymas

    Use the same grammatical form for each item. Example: “to collect, analyze, and report data.”

25. 25 kortelė

    Klausimas

    Claim stronger than the evidence?

    Atsakymas

    Qualify the claim. Limited evidence can support “may” or “suggests,” not an absolute conclusion.

26. 26 kortelė

    Klausimas

    Her account is plausible because it matches the records. Meaning of “plausible”?

    Atsakymas

    Reasonable or believable.

27. 27 kortelė

    Klausimas

    The plan cuts costs. Moreover, it shortens delivery time. What relationship does “Moreover” signal?

    Atsakymas

    Addition. The second statement adds a related supporting point.

28. 28 kortelė

    Klausimas

    Colon before an explanation or list?

    Atsakymas

    Use it only after a complete independent clause. Example: “The kit needs three items: tape, gloves, and labels.”

29. 29 kortelė

    Klausimas

    Claim versus evidence?

    Atsakymas

    A claim is the point being argued; evidence is the information used to support it.

30. 30 kortelė

    Klausimas

    The memo's ambiguous wording allowed two readings. Meaning of “ambiguous”?

    Atsakymas

    Open to more than one interpretation.

31. 31 kortelė

    Klausimas

    The team didn't replace the sensor. Instead, it recalibrated the existing one. What relationship does “Instead” signal?

    Atsakymas

    Replacement. The second statement substitutes one action for another.

32. 32 kortelė

    Klausimas

    Count nouns versus mass nouns?

    Atsakymas

    Use “fewer” with countable items and “less” with amounts. Example: fewer errors, less noise.

33. 33 kortelė

    Klausimas

    Effect of a counterexample?

    Atsakymas

    It weakens a universal claim by showing at least one case where the claim fails.

34. 34 kortelė

    Klausimas

    Rainfall was sporadic: brief showers interrupted long dry periods. Meaning of “sporadic”?

    Atsakymas

    Irregular and occasional.

35. 35 kortelė

    Klausimas

    The seedlings grew indoors. Subsequently, workers moved them outside. What relationship does “Subsequently” signal?

    Atsakymas

    Later step in a sequence. The second event occurs after the first.

36. 36 kortelė

    Klausimas

    Essential clause punctuation?

    Atsakymas

    Do not surround an essential clause with commas. It identifies which person or thing the sentence means.

37. 37 kortelė

    Klausimas

    Correlation alone proves causation?

    Atsakymas

    No. A relationship between variables does not by itself show that one caused the other.

38. 38 kortelė

    Klausimas

    Subsequent trials produced the same result. Meaning of “subsequent”?

    Atsakymas

    Coming later in time.

39. 39 kortelė

    Klausimas

    The coating is hydrophobic. In other words, it repels water. What relationship does “In other words” signal?

    Atsakymas

    Restatement for clarity. The second statement rephrases the first.

40. 40 kortelė

    Klausimas

    Verb tense across a paragraph?

    Atsakymas

    Keep the time frame consistent unless the timing actually changes.

41. 41 kortelė

    Klausimas

    Missing information in a data claim?

    Atsakymas

    Look for the baseline, sample size, units, comparison group, or time interval needed to judge the claim.

42. 42 kortelė

    Klausimas

    The coating helps the fabric retain heat. Meaning of “retain”?

    Atsakymas

    Keep or continue to hold.

43. 43 kortelė

    Klausimas

    The repair requires specialized tools. Specifically, it needs a torque wrench. What relationship does “Specifically” signal?

    Atsakymas

    General-to-specific detail. The second statement narrows the broad first statement.

44. 44 kortelė

    Klausimas

    Coordinate adjectives?

    Atsakymas

    Separate them with a comma when their order can switch and “and” can fit between them. Example: “a clear, concise note.”

45. 45 kortelė

    Klausimas

    Two sources on the same event?

    Atsakymas

    Compare the exact claims, evidence, scope, and perspective. Shared topic does not guarantee agreement.

46. 46 kortelė

    Klausimas

    The survey was designed to elicit candid responses. Meaning of “elicit”?

    Atsakymas

    Draw out or bring forth.

47. 47 kortelė

    Klausimas

    Heavy rain loosened the soil. Consequently, the trail closed. What relationship does “Consequently” signal?

    Atsakymas

    Cause and effect. The second statement is an outcome of the first.

48. 48 kortelė

    Klausimas

    Sentence fragment?

    Atsakymas

    A group of words missing an independent clause. Attach it to a complete sentence or supply the missing subject and verb.

49. 49 kortelė

    Klausimas

    Inference from a narrow sample?

    Atsakymas

    Limit the conclusion to the population the sample can represent. Do not generalize beyond the evidence.

50. 50 kortelė

    Klausimas

    Cost was the main constraint on the project. Meaning of “constraint”?

    Atsakymas

    A limit or restriction.

51. 51 kortelė

    Klausimas

    Early results conflicted. Ultimately, the team accepted the model. What relationship does “Ultimately” signal?

    Atsakymas

    Overall conclusion. The second statement gives the final judgment after earlier considerations.

52. 52 kortelė

    Klausimas

    Conjunctive adverb between independent clauses?

    Atsakymas

    Use a semicolon before it and a comma after it. Example: “The route was longer; however, it was safer.”

53. 53 kortelė

    Klausimas

    Most accurate summary?

    Atsakymas

    State the central idea and its essential support without adding opinions or minor details.

54. 54 kortelė

    Klausimas

    The review was comprehensive, covering every recorded case. Meaning of “comprehensive”?

    Atsakymas

    Complete and wide-ranging.

55. 55 kortelė

    Klausimas

    The method is efficient. Indeed, it cuts processing time in half. What relationship does “Indeed” signal?

    Atsakymas

    Emphasis and confirmation. The second statement reinforces the first with a stronger detail.

56. 56 kortelė

    Klausimas

    Who versus whom?

    Atsakymas

    Use “who” as a subject and “whom” as an object. Test with he/him: “whom” matches “him.”

57. 57 kortelė

    Klausimas

    Evidence that best resolves a disagreement?

    Atsakymas

    Choose evidence that tests the specific point on which the sources differ, not a fact both already accept.

58. 58 kortelė

    Klausimas

    The two materials have distinct properties. Meaning of “distinct”?

    Atsakymas

    Clearly different or separate.

59. 59 kortelė

    Klausimas

    The forecast warned of rain. Still, the outdoor concert began on time. What relationship does “Still” signal?

    Atsakymas

    Concession. The second statement remains true despite the obstacle in the first.

60. 60 kortelė

    Klausimas

    Comma before an introduced direct quotation?

    Atsakymas

    Use a comma after a speech tag. Example: “Mina wrote, ‘The sample is ready.’”

61. 61 kortelė

    Klausimas

    The conclusion was qualified by two important exceptions. Meaning of “qualified”?

    Atsakymas

    Limited or modified, rather than stated without conditions.

62. 62 kortelė

    Klausimas

    Notes for a synthesis goal?

    Atsakymas

    Use only facts that directly serve the stated goal. Relevant notes can be omitted if they do not help that purpose.

63. 63 kortelė

    Klausimas

    Comma splice?

    Atsakymas

    Two independent clauses joined only by a comma. Replace it with a period or semicolon, or add a coordinating conjunction.

64. 64 kortelė

    Klausimas

    Comma between subject and verb?

    Atsakymas

    Do not use one unless an interrupting phrase requires paired commas. “The results of the trial were clear” takes no comma after “trial.”

65. 65 kortelė

    Klausimas

    The new sensor made the older model obsolete. Meaning of “obsolete”?

    Atsakymas

    No longer useful or current because something newer replaced it.

66. 66 kortelė

    Klausimas

    Source attribution in a synthesis?

    Atsakymas

    Name the source when its identity, authority, or perspective matters to the rhetorical goal.

67. 67 kortelė

    Klausimas

    Compound subject joined by “and”?

    Atsakymas

    Use a plural verb in the usual case. Example: “The map and the notes are useful.”

68. 68 kortelė

    Klausimas

    Dangling opening modifier?

    Atsakymas

    It lacks the intended doer immediately after the modifier. Rewrite so the doer becomes the subject.

69. 69 kortelė

    Klausimas

    Researchers derived the estimate from three measurements. Meaning of “derived”?

    Atsakymas

    Obtained from a source or calculation.

70. 70 kortelė

    Klausimas

    Chronological synthesis?

    Atsakymas

    Order events by time and use dates or sequence words only when they help the reader follow the progression.

71. 71 kortelė

    Klausimas

    Plural noun ending in s: possessive form?

    Atsakymas

    Add an apostrophe after the existing s. Example: “the researchers' notes.”

72. 72 kortelė

    Klausimas

    Logical comparison?

    Atsakymas

    Compare like with like. Example: compare one city's rainfall with another city's rainfall, not with the city itself.

73. 73 kortelė

    Klausimas

    The article advocates preserving the wetland. Meaning of “advocates”?

    Atsakymas

    Publicly supports or argues for.

74. 74 kortelė

    Klausimas

    Compare evidence from two studies?

    Atsakymas

    State the shared measure first, then the relevant difference in result, method, or population.

75. 75 kortelė

    Klausimas

    Colon after an incomplete lead-in?

    Atsakymas

    Do not use one. A colon must follow a complete clause, so “The reasons include:” is incorrect.

76. 76 kortelė

    Klausimas

    Number versus amount?

    Atsakymas

    Use “number” for countable items and “amount” for uncountable quantities. Example: number of files, amount of water.

77. 77 kortelė

    Klausimas

    Portable chargers are now ubiquitous on long trips. Meaning of “ubiquitous”?

    Atsakymas

    Present or found almost everywhere.

78. 78 kortelė

    Klausimas

    Synthesis that emphasizes a difference?

    Atsakymas

    Use the same comparison point for both subjects, then state the contrast directly.

79. 79 kortelė

    Klausimas

    Nonessential clause or phrase?

    Atsakymas

    Set it off with paired commas. The sentence should keep its core identity and meaning when the phrase is removed.

80. 80 kortelė

    Klausimas

    Earlier of two past actions?

    Atsakymas

    Use past perfect when the sequence needs clarification. Example: “The team had left before the storm began.”

81. 81 kortelė

    Klausimas

    Sentence 2 presents an exception to sentence 1. Its function?

    Atsakymas

    It qualifies the first claim by limiting when or how broadly it applies.

82. 82 kortelė

    Klausimas

    Rhetorical goal: define a term?

    Atsakymas

    Give the term's relevant meaning before using details or examples that depend on it.

83. 83 kortelė

    Klausimas

    Cumulative adjectives?

    Atsakymas

    Do not separate them with a comma when each adjective builds on the next. Example: “three small glass jars.”

84. 84 kortelė

    Klausimas

    Run-on sentence?

    Atsakymas

    Independent clauses joined without valid punctuation or a conjunction. Add a period, semicolon, or comma plus coordinating conjunction.

85. 85 kortelė

    Klausimas

    Sentence 2 gives a specific case after a general claim. Its function?

    Atsakymas

    It illustrates the claim with an example.

86. 86 kortelė

    Klausimas

    Introduce a quotation in a synthesis?

    Atsakymas

    Give enough source and context to show why the quotation matters; do not leave it unattached.

87. 87 kortelė

    Klausimas

    Relative pronoun for people?

    Atsakymas

    Use “who” or “whom,” depending on case. Example: “the engineer who designed the bridge.”

88. 88 kortelė

    Klausimas

    Integrated quotation punctuation?

    Atsakymas

    Do not add a comma when the quotation completes the grammar of the sentence. Example: The report calls the result “unexpected.”

89. 89 kortelė

    Klausimas

    Sentence 2 admits a limitation before defending the claim. Its function?

    Atsakymas

    It makes a concession, showing that the writer recognizes a complication.

90. 90 kortelė

    Klausimas

    Avoid redundancy in synthesis?

    Atsakymas

    State each needed idea once. Prefer the version that preserves meaning with fewer repeated words.

91. 91 kortelė

    Klausimas

    Semicolon between two independent clauses?

    Atsakymas

    Use it without a coordinating conjunction when the ideas are closely related. Example: “The trial ended; the analysis began.”

92. 92 kortelė

    Klausimas

    Comma in a compound predicate?

    Atsakymas

    Usually omit it when one subject performs both actions. Example: “The team collected the samples and recorded the temperature.”

93. 93 kortelė

    Klausimas

    Sentence 2 explains what a technical term means. Its function?

    Atsakymas

    It defines or clarifies the term.

94. 94 kortelė

    Klausimas

    Combine two related sentences?

    Atsakymas

    Make the logical relationship explicit and remove repeated material without changing the facts.

95. 95 kortelė

    Klausimas

    Either/or subject agreement?

    Atsakymas

    Make the verb agree with the nearer subject. Example: “Either the notes or the map is missing.”

96. 96 kortelė

    Klausimas

    Active versus passive voice?

    Atsakymas

    Choose the voice that fits the focus. Active highlights the doer; passive can highlight the action or receiver.

97. 97 kortelė

    Klausimas

    Sentence 2 describes the outcome of sentence 1. Its function?

    Atsakymas

    It presents an effect or consequence.

98. 98 kortelė

    Klausimas

    Formal academic register?

    Atsakymas

    Use precise, neutral wording and avoid slang, vague intensifiers, and chatty asides unless the goal calls for them.

99. 99 kortelė

    Klausimas

    Its or it's?

    Atsakymas

    “Its” is possessive; “it's” means “it is” or “it has.”

100. 100 kortelė

     Klausimas

     Adjective versus adverb?

     Atsakymas

     An adjective modifies a noun; an adverb usually modifies a verb, adjective, or adverb. Example: a careful test; test carefully.

101. 101 kortelė

     Klausimas

     A study reports a result without arguing for a policy. Author's purpose?

     Atsakymas

     To inform or explain, not necessarily to persuade.

102. 102 kortelė

     Klausimas

     Concise synthesis?

     Atsakymas

     Keep every fact needed for the rhetorical goal and remove details that repeat or distract from it.

103. 103 kortelė

     Klausimas

     Single dash for emphasis?

     Atsakymas

     Use it after a complete thought to spotlight a final explanation or turn. Example: “One result stood out—the oldest sample.”

104. 104 kortelė

     Klausimas

     Comma with direct address?

     Atsakymas

     Set off the person being addressed. Example: “Rina, please check the units.”

105. 105 kortelė

     Klausimas

     Why acknowledge a limitation?

     Atsakymas

     To define the claim's boundary and show how the evidence should be interpreted.

106. 106 kortelė

     Klausimas

     Quantitative comparison in a synthesis?

     Atsakymas

     Name both values, the shared unit, and the direction or size of the difference.

107. 107 kortelė

     Klausimas

     Each of the samples: verb number?

     Atsakymas

     Singular. “Each of the samples was labeled.” The subject is “each.”

108. 108 kortelė

     Klausimas

     Between versus among?

     Atsakymas

     Use “between” for distinct individual relationships and “among” for a group without separate pairings.

109. 109 kortelė

     Klausimas

     Rhetorical question in an argument?

     Atsakymas

     It can frame the issue or prompt the reader to consider an implied answer; it is not evidence by itself.

110. 110 kortelė

     Klausimas

     Claim before or after support?

     Atsakymas

     Place it where the rhetorical goal is clearest: before evidence for a direct point, or after evidence for an evidence-led conclusion.

111. 111 kortelė

     Klausimas

     Restrictive “that” versus nonrestrictive “which”?

     Atsakymas

     Use “that” without commas for essential information; use “which” with commas for removable information.

112. 112 kortelė

     Klausimas

     Present perfect use?

     Atsakymas

     Use it for an action connected to the present or continuing to now. Example: “The team has tracked rainfall since May.”

113. 113 kortelė

     Klausimas

     Two texts reach the same conclusion with different evidence. Relationship?

     Atsakymas

     They agree in conclusion but support it through different evidence.

114. 114 kortelė

     Klausimas

     Group related ideas in a synthesis?

     Atsakymas

     Keep facts serving the same point together, then signal the move to a new point.

115. 115 kortelė

     Klausimas

     Compound modifier before a noun?

     Atsakymas

     Hyphenate it when needed for clarity. Example: “a well-designed study.”

116. 116 kortelė

     Klausimas

     Affect or effect?

     Atsakymas

     “Affect” is usually a verb meaning influence; “effect” is usually a noun meaning result.

117. 117 kortelė

     Klausimas

     Two texts offer incompatible explanations. Relationship?

     Atsakymas

     They disagree about the cause or interpretation, even if they share the same observations.

118. 118 kortelė

     Klausimas

     Replace a vague pronoun in synthesis?

     Atsakymas

     Use the precise noun when two or more possible antecedents could confuse the reader.

119. 119 kortelė

     Klausimas

     Comma-separated list?

     Atsakymas

     Use commas between three or more parallel items. A final serial comma can prevent ambiguity.

120. 120 kortelė

     Klausimas

     Main clause before a dependent clause?

     Atsakymas

     Usually no comma when the dependent clause is essential. Example: “The match continued although rain fell.”

121. 121 kortelė

     Klausimas

     Two authors use the same evidence but different assumptions. Key difference?

     Atsakymas

     Their perspectives or interpretive frameworks, not the underlying evidence.

122. 122 kortelė

     Klausimas

     Independent clauses joined with a coordinating conjunction?

     Atsakymas

     Place a comma before the conjunction. Example: “The sensor failed, so the team repeated the trial.”

123. 123 kortelė

     Klausimas

     Introductory transition?

     Atsakymas

     Follow it with a comma when it modifies the whole sentence. Example: “However, the second trial succeeded.”

124. 124 kortelė

     Klausimas

     Pronoun–antecedent agreement?

     Atsakymas

     Match number and make the reference clear. Singular “they” is standard when a person's gender is unknown or irrelevant.

125. 125 kortelė

     Klausimas

     Paired em dashes?

     Atsakymas

     Use them to set off an emphatic interruption. Both dashes are needed when the sentence continues after it.

126. 126 kortelė

     Klausimas

     How does new evidence relate to an earlier claim?

     Atsakymas

     It may support, weaken, qualify, or leave the claim unchanged. Match the evidence to the exact claim.

127. 127 kortelė

     Klausimas

     Their, there, or they're?

     Atsakymas

     “Their” is possessive, “there” refers to place or existence, and “they're” means “they are.”

128. 128 kortelė

     Klausimas

     Good or well?

     Atsakymas

     “Good” is usually an adjective; “well” is usually an adverb. A person can feel good and perform well.

129. 129 kortelė

     Klausimas

     Appositive naming the same noun?

     Atsakymas

     Set a nonessential appositive off with commas. Example: “Dr. Rao, the lead author, presented the findings.”

130. 130 kortelė

     Klausimas

     Why use an analogy?

     Atsakymas

     To clarify an unfamiliar idea through a relevant similarity to something more familiar.

131. 131 kortelė

     Klausimas

     Than or then?

     Atsakymas

     “Than” makes a comparison; “then” refers to time or consequence.

132. 132 kortelė

     Klausimas

     Hypothetical contrary-to-fact “if” clause?

     Atsakymas

     Use subjunctive “were.” Example: “If the sample were larger, the estimate would be steadier.”

133. 133 kortelė

     Klausimas

     Plural noun with no possession?

     Atsakymas

     Do not add an apostrophe. Write “three sensors,” not “three sensor's.”

134. 134 kortelė

     Klausimas

     Neutral, evidence-led wording indicates what tone?

     Atsakymas

     Objective. It emphasizes information rather than strong personal judgment.

135. 135 kortelė

     Klausimas

     Complex list with internal commas?

     Atsakymas

     Use semicolons between the main items. Example: “Lima, Peru; Accra, Ghana; and Hanoi, Vietnam.”

136. 136 kortelė

     Klausimas

     Ambiguous pronoun?

     Atsakymas

     A pronoun with more than one plausible antecedent. Replace it with the intended noun.

137. 137 kortelė

     Klausimas

     Parentheses around nonessential information?

     Atsakymas

     Use them for an aside that is less central than the main sentence. The sentence must remain grammatical without it.

138. 138 kortelė

     Klausimas

     Repeated doubt about the evidence indicates what tone?

     Atsakymas

     Skeptical. The writer questions whether a claim is adequately supported.

139. 139 kortelė

     Klausimas

     Superlative comparison?

     Atsakymas

     Use it for one member against a group of three or more. Example: “the fastest of the four methods.”

140. 140 kortelė

     Klausimas

     Pronoun after a preposition?

     Atsakymas

     Use the object form. Write “between you and me,” not “between you and I.”

141. 141 kortelė

     Klausimas

     Apostrophe in a contraction?

     Atsakymas

     It marks omitted letters. Example: “can't” contracts “cannot,” and “they're” contracts “they are.”

142. 142 kortelė

     Klausimas

     Coordinate-adjective test?

     Atsakymas

     If “and” works between the adjectives and their order can reverse, use a comma between them.

143. 143 kortelė

     Klausimas

     Double comparative?

     Atsakymas

     Use only one comparative marker. Write “more efficient” or “faster,” not “more faster.”

144. 144 kortelė

     Klausimas

     Lie or lay?

     Atsakymas

     “Lie” means recline and takes no object; “lay” means place and takes an object. Present: lie/lay; past: lay/laid.

145. 145 kortelė

     Klausimas

     Who's or whose?

     Atsakymas

     “Who's” means “who is” or “who has”; “whose” is possessive.

146. 146 kortelė

     Klausimas

     Standard comparison with “different”?

     Atsakymas

     Use “different from.” Example: “This result is different from the earlier estimate.”

147. 147 kortelė

     Klausimas

     Paired construction with two endpoints?

     Atsakymas

     Use “between” with “and”: “between 10 and 15,” not “between 10 to 15.”

148. 148 kortelė

     Klausimas

     Verb mood in a coordinated idea?

     Atsakymas

     Keep the mood consistent unless the meaning changes. Do not shift from a command to a statement without reason.

149. 149 kortelė

     Klausimas

     Possessive pronoun apostrophe?

     Atsakymas

     Do not use one. Write “hers,” “ours,” “yours,” and “theirs.”

150. 150 kortelė

     Klausimas

     Comma between a preposition and its object?

     Atsakymas

     Do not use one. Keep the prepositional phrase intact: “in the final report,” not “in, the final report.”

     

     300 kortelių

     Digital SAT Flashcards: Math, Grammar & Words in Context

     Mokytis iš šio rinkinio nemokamai

     Atsidarys Nibomo ir galėsite pradėti mokytis.

151. 151 kortelė

     Klausimas

     Solve $ax+b=c$ for $x$, where $a≠0$.

     Atsakymas

     $x=(c-b)/a$. Subtract $b$ first, then divide by $a$.

152. 152 kortelė

     Klausimas

     Product of powers with the same base?

     Atsakymas

     $a^m a^n=a^{m+n}$. Keep the base and add the exponents.

153. 153 kortelė

     Klausimas

     Unit rate?

     Atsakymas

     The amount per 1 unit. Divide both quantities by the same value so the denominator becomes 1.

154. 154 kortelė

     Klausimas

     Rectangle area?

     Atsakymas

     $A=lw$, where $l$ is length and $w$ is width.

155. 155 kortelė

     Klausimas

     Slope from two points?

     Atsakymas

     $m=(y_2-y_1)/(x_2-x_1)$. Subtract coordinates in the same order.

156. 156 kortelė

     Klausimas

     Quotient of powers with the same base?

     Atsakymas

     $a^m/a^n=a^{m-n}$ for $a≠0$.

157. 157 kortelė

     Klausimas

     Conversion factor setup?

     Atsakymas

     Multiply by a ratio equal to 1, with the unwanted unit placed to cancel.

158. 158 kortelė

     Klausimas

     Triangle area?

     Atsakymas

     $A=(1/2)bh$. The height must be perpendicular to the chosen base.

159. 159 kortelė

     Klausimas

     Slope-intercept form?

     Atsakymas

     $y=mx+b$, where $m$ is the slope and $b$ is the y-intercept.

160. 160 kortelė

     Klausimas

     Power raised to a power?

     Atsakymas

     $(a^m)^n=a^{mn}$. Multiply the exponents.

161. 161 kortelė

     Klausimas

     Dimensional analysis check?

     Atsakymas

     Cancel units algebraically. The units left at the end should match the quantity requested.

162. 162 kortelė

     Klausimas

     Trapezoid area?

     Atsakymas

     $A=(1/2)(b_1+b_2)h$. The height is perpendicular to the parallel bases.

163. 163 kortelė

     Klausimas

     Point-slope form?

     Atsakymas

     $y-y_1=m(x-x_1)$. Use a known point $(x_1,y_1)$ and the slope $m$.

164. 164 kortelė

     Klausimas

     Negative exponent?

     Atsakymas

     $a^{-n}=1/a^n$ for $a≠0$.

165. 165 kortelė

     Klausimas

     Constant of proportionality in $y=kx$?

     Atsakymas

     $k=y/x$ for $x≠0$. It is also the unit rate and slope.

166. 166 kortelė

     Klausimas

     Circle area?

     Atsakymas

     $A=πr^2$.

167. 167 kortelė

     Klausimas

     Intercepts from $Ax+By=C$?

     Atsakymas

     Set $y=0$ for the x-intercept and set $x=0$ for the y-intercept.

168. 168 kortelė

     Klausimas

     Fractional exponent?

     Atsakymas

     $a^{m/n}$ means the nth root of $a^m$. For example, $a^{1/2}=√a$.

169. 169 kortelė

     Klausimas

     Scale drawing length?

     Atsakymas

     Use a proportion with corresponding lengths in the same order, then apply the stated scale factor.

170. 170 kortelė

     Klausimas

     Circle circumference?

     Atsakymas

     $C=2πr=πd$.

171. 171 kortelė

     Klausimas

     Parallel nonvertical lines: slope relationship?

     Atsakymas

     They have equal slopes. Distinct parallel lines have different intercepts.

172. 172 kortelė

     Klausimas

     Difference of squares?

     Atsakymas

     $a^2-b^2=(a-b)(a+b)$.

173. 173 kortelė

     Klausimas

     Percent change?

     Atsakymas

     New minus original, divided by the original, then multiplied by 100 percent. The original value is the denominator.

174. 174 kortelė

     Klausimas

     Arc length from central angle $θ$ in degrees?

     Atsakymas

     $L=(θ/360)(2πr)$.

175. 175 kortelė

     Klausimas

     Perpendicular nonvertical lines: slope relationship?

     Atsakymas

     Their slopes are negative reciprocals, so $m_1m_2=-1$.

176. 176 kortelė

     Klausimas

     Perfect-square trinomial pattern?

     Atsakymas

     $a^2+2ab+b^2=(a+b)^2$ and $a^2-2ab+b^2=(a-b)^2$.

177. 177 kortelė

     Klausimas

     Increase by $r$ percent: multiplier?

     Atsakymas

     $1+r/100$. Multiply the original value by this factor.

178. 178 kortelė

     Klausimas

     Sector area from central angle $θ$ in degrees?

     Atsakymas

     $A=(θ/360)(πr^2)$.

179. 179 kortelė

     Klausimas

     x-intercept of a graph?

     Atsakymas

     A point where $y=0$ and the graph meets the x-axis.

180. 180 kortelė

     Klausimas

     First step in factoring $ax^2+bx+c$?

     Atsakymas

     Look for common factors and two binomials whose product reproduces the middle and constant terms.

181. 181 kortelė

     Klausimas

     Original value after a 20 percent increase to 84?

     Atsakymas

     70. Divide the final value by the multiplier: $84/1.20=70$.

182. 182 kortelė

     Klausimas

     Triangle interior-angle sum?

     Atsakymas

     $180°$.

183. 183 kortelė

     Klausimas

     y-intercept of a graph?

     Atsakymas

     A point where $x=0$ and the graph meets the y-axis.

184. 184 kortelė

     Klausimas

     Roots from $(x-p)(x-q)=0$?

     Atsakymas

     $x=p$ or $x=q$, by the zero-product property.

185. 185 kortelė

     Klausimas

     Weighted average?

     Atsakymas

     Sum of each value times its weight, divided by the sum of the weights. Do not take a simple average of unequal groups.

186. 186 kortelė

     Klausimas

     Exterior angle of a triangle?

     Atsakymas

     It equals the sum of the two remote interior angles.

187. 187 kortelė

     Klausimas

     Line through two points?

     Atsakymas

     Find the slope, then substitute either point into point-slope or slope-intercept form.

188. 188 kortelė

     Klausimas

     Quadratic formula?

     Atsakymas

     $x=(-b±√(b^2-4ac))/(2a)$ for $ax^2+bx+c=0$.

189. 189 kortelė

     Klausimas

     Arithmetic mean?

     Atsakymas

     Add all values and divide by the number of values.

190. 190 kortelė

     Klausimas

     Parallel lines cut by a transversal: alternate interior angles?

     Atsakymas

     They are congruent.

191. 191 kortelė

     Klausimas

     Slope's units in context?

     Atsakymas

     Output units per input unit. In $y$ versus $x$, slope units are y-units divided by x-units.

192. 192 kortelė

     Klausimas

     What does $b^2-4ac$ tell you?

     Atsakymas

     The number of real solutions: positive gives two, zero gives one, and negative gives none.

193. 193 kortelė

     Klausimas

     Median?

     Atsakymas

     The middle value after ordering the data; for an even count, average the two middle values.

194. 194 kortelė

     Klausimas

     Similar triangles: corresponding sides?

     Atsakymas

     They are proportional. Match sides opposite equal angles.

195. 195 kortelė

     Klausimas

     Direct variation model?

     Atsakymas

     $y=kx$. It is linear and passes through the origin.

196. 196 kortelė

     Klausimas

     Vertex x-coordinate of $ax^2+bx+c$?

     Atsakymas

     $x=-b/(2a)$.

197. 197 kortelė

     Klausimas

     Range of a data set?

     Atsakymas

     Maximum minus minimum.

198. 198 kortelė

     Klausimas

     Scale factor $k$: area factor?

     Atsakymas

     $k^2$. Lengths scale by $k$, while areas scale by the square of $k$.

199. 199 kortelė

     Klausimas

     Solution of a two-line system?

     Atsakymas

     The intersection point, whose coordinates satisfy both equations.

200. 200 kortelė

     Klausimas

     Vertex form of a quadratic?

     Atsakymas

     $y=a(x-h)^2+k$, with vertex $(h,k)$.

201. 201 kortelė

     Klausimas

     Interquartile range?

     Atsakymas

     $IQR=Q_3-Q_1$. It measures the spread of the middle half of the data.

202. 202 kortelė

     Klausimas

     Pythagorean theorem?

     Atsakymas

     $a^2+b^2=c^2$ for a right triangle, where $c$ is the hypotenuse.

203. 203 kortelė

     Klausimas

     Substitution in a system?

     Atsakymas

     Solve one equation for a variable and replace that variable in the other equation.

204. 204 kortelė

     Klausimas

     Axis of symmetry of $y=a(x-h)^2+k$?

     Atsakymas

     $x=h$.

205. 205 kortelė

     Klausimas

     Larger standard deviation means what?

     Atsakymas

     The data are more spread out around the mean.

206. 206 kortelė

     Klausimas

     45°-45°-90° side ratio?

     Atsakymas

     $1:1:√2$. The hypotenuse is a leg times $√2$.

207. 207 kortelė

     Klausimas

     Elimination in a system?

     Atsakymas

     Add or subtract equations so one variable cancels, then solve for the other.

208. 208 kortelė

     Klausimas

     Completing the square?

     Atsakymas

     For $x^2+bx$, add $(b/2)^2$ to form $(x+b/2)^2$.

209. 209 kortelė

     Klausimas

     Effect of a high outlier on the mean?

     Atsakymas

     It usually pulls the mean upward. The median is often less affected.

210. 210 kortelė

     Klausimas

     30°-60°-90° side ratio?

     Atsakymas

     $1:√3:2$, opposite $30°$, $60°$, and $90°$ respectively.

211. 211 kortelė

     Klausimas

     Parallel lines in a system?

     Atsakymas

     No solution when they are distinct: equal slopes and different intercepts.

212. 212 kortelė

     Klausimas

     Sum and product of roots of $ax^2+bx+c=0$?

     Atsakymas

     Sum $=-b/a$ and product $=c/a$.

213. 213 kortelė

     Klausimas

     Add the same constant to every data value: effect?

     Atsakymas

     The mean and median increase by that constant; measures of spread stay unchanged.

214. 214 kortelė

     Klausimas

     Right-triangle sine?

     Atsakymas

     Sine of $θ$ equals opposite over hypotenuse.

215. 215 kortelė

     Klausimas

     Same line written two ways in a system?

     Atsakymas

     Infinitely many solutions. Simplifying either equation produces the other.

216. 216 kortelė

     Klausimas

     Remainder when $P(x)$ is divided by $x-a$?

     Atsakymas

     $P(a)$, by the Remainder Theorem.

217. 217 kortelė

     Klausimas

     Multiply every data value by positive $k$: effect?

     Atsakymas

     The mean, median, range, IQR, and standard deviation are all multiplied by $k$.

218. 218 kortelė

     Klausimas

     Right-triangle cosine?

     Atsakymas

     Cosine of $θ$ equals adjacent over hypotenuse.

219. 219 kortelė

     Klausimas

     Multiply or divide an inequality by a negative number?

     Atsakymas

     Reverse the inequality sign.

220. 220 kortelė

     Klausimas

     When is $x-a$ a factor of $P(x)$?

     Atsakymas

     When $P(a)=0$, by the Factor Theorem.

221. 221 kortelė

     Klausimas

     Joint probability from a two-way table?

     Atsakymas

     Divide the count in the intersection cell by the grand total.

222. 222 kortelė

     Klausimas

     Right-triangle tangent?

     Atsakymas

     Tangent of $θ$ equals opposite over adjacent.

223. 223 kortelė

     Klausimas

     Compound inequality with “and”?

     Atsakymas

     Use the intersection: values that satisfy both inequalities.

224. 224 kortelė

     Klausimas

     Even degree with positive leading coefficient: end behavior?

     Atsakymas

     Both ends rise: $P(x)→∞$ as $x→±∞$.

225. 225 kortelė

     Klausimas

     Conditional probability $P(A|B)$?

     Atsakymas

     $P(A∩B)/P(B)$. Restrict the denominator to outcomes in $B$.

226. 226 kortelė

     Klausimas

     Complementary acute angles: sine–cosine relationship?

     Atsakymas

     The sine of $θ$ equals the cosine of $90°-θ$.

227. 227 kortelė

     Klausimas

     Compound inequality with “or”?

     Atsakymas

     Use the union: values that satisfy at least one inequality.

228. 228 kortelė

     Klausimas

     Odd degree with positive leading coefficient: end behavior?

     Atsakymas

     The left end falls and the right end rises.

229. 229 kortelė

     Klausimas

     Independent events $A$ and $B$?

     Atsakymas

     $P(A∩B)=P(A)P(B)$. Knowing one occurred does not change the probability of the other.

230. 230 kortelė

     Klausimas

     Distance between $(x_1,y_1)$ and $(x_2,y_2)$?

     Atsakymas

     $√((x_2-x_1)^2+(y_2-y_1)^2)$.

231. 231 kortelė

     Klausimas

     Solve $|x-a|=b$ for $b≥0$.

     Atsakymas

     $x-a=b$ or $x-a=-b$. Absolute value represents distance from $a$.

232. 232 kortelė

     Klausimas

     Exponential growth model?

     Atsakymas

     $y=a(1+r)^t$, where $a$ is the initial value and $r$ is the growth rate per period.

233. 233 kortelė

     Klausimas

     Mutually exclusive events?

     Atsakymas

     They cannot occur together, so $P(A∪B)=P(A)+P(B)$.

234. 234 kortelė

     Klausimas

     Midpoint of two points?

     Atsakymas

     $((x_1+x_2)/2,(y_1+y_2)/2)$.

235. 235 kortelė

     Klausimas

     Solve $|x-a|<b$ for $b>0$.

     Atsakymas

     $a-b<x<a+b$. The solution lies within distance $b$ of $a$.

236. 236 kortelė

     Klausimas

     Exponential decay model?

     Atsakymas

     $y=a(1-r)^t$, where $0<r<1$ is the decay rate per period.

237. 237 kortelė

     Klausimas

     Complement rule?

     Atsakymas

     The probability that $A$ does not occur is $1-P(A)$.

238. 238 kortelė

     Klausimas

     Circle with center $(h,k)$ and radius $r$?

     Atsakymas

     $(x-h)^2+(y-k)^2=r^2$.

239. 239 kortelė

     Klausimas

     Evaluate $f(a)$?

     Atsakymas

     Substitute $a$ for every input variable in the function rule, then simplify.

240. 240 kortelė

     Klausimas

     Growth factor 1.08: percent growth rate?

     Atsakymas

     8 percent. Subtract 1 and convert the decimal to a percent.

241. 241 kortelė

     Klausimas

     Representative random sample permits what conclusion?

     Atsakymas

     A cautious generalization from the sample to the population it represents.

242. 242 kortelė

     Klausimas

     Radius from $(x-h)^2+(y-k)^2=R$?

     Atsakymas

     $r=√R$, provided $R>0$.

243. 243 kortelė

     Klausimas

     Linear table: constant slope check?

     Atsakymas

     Equal changes in $x$ must produce equal changes in $y$; compare $Δy/Δx$ across intervals.

244. 244 kortelė

     Klausimas

     Decay factor 0.73: percent decrease?

     Atsakymas

     27 percent. Compute $1-0.73=0.27$.

245. 245 kortelė

     Klausimas

     Random assignment permits what causal claim?

     Atsakymas

     If the experiment is well controlled, differences between treatment groups can support a causal conclusion.

246. 246 kortelė

     Klausimas

     Radius and tangent at the contact point?

     Atsakymas

     They are perpendicular.

247. 247 kortelė

     Klausimas

     Positive slope means what for a linear function?

     Atsakymas

     The output increases as the input increases.

248. 248 kortelė

     Klausimas

     Solve $3^{2x}=3^{10}$.

     Atsakymas

     $x=5$. Equal positive bases other than 1 have equal exponents.

249. 249 kortelė

     Klausimas

     Observational study supports causation?

     Atsakymas

     No. It can show association, but uncontrolled confounding variables may explain the pattern.

250. 250 kortelė

     Klausimas

     Rectangular-prism volume?

     Atsakymas

     $V=lwh$, or base area times height.

251. 251 kortelė

     Klausimas

     Arithmetic sequence common difference?

     Atsakymas

     Subtract consecutive terms: $d=a_n-a_{n-1}$.

252. 252 kortelė

     Klausimas

     Compound interest formula?

     Atsakymas

     $A=P(1+r/n)^{nt}$, where $n$ is the number of compounding periods per year.

253. 253 kortelė

     Klausimas

     Larger random sample: effect on margin of error?

     Atsakymas

     It generally decreases the margin of error when the sampling method stays sound.

254. 254 kortelė

     Klausimas

     Cylinder volume?

     Atsakymas

     $V=πr^2h$.

255. 255 kortelė

     Klausimas

     Arithmetic sequence nth term?

     Atsakymas

     $a_n=a_1+(n-1)d$.

256. 256 kortelė

     Klausimas

     Rational expression: first domain check?

     Atsakymas

     Exclude values that make any original denominator zero, even if a factor later cancels.

257. 257 kortelė

     Klausimas

     Slope of a line of best fit?

     Atsakymas

     The predicted change in the response variable for each 1-unit increase in the explanatory variable.

258. 258 kortelė

     Klausimas

     Cone volume?

     Atsakymas

     $V=(1/3)πr^2h$.

259. 259 kortelė

     Klausimas

     Solve a literal equation for one variable?

     Atsakymas

     Treat the other symbols as constants and use inverse operations to isolate the target variable.

260. 260 kortelė

     Klausimas

     Why check rational-equation solutions?

     Atsakymas

     Clearing denominators can produce a value excluded from the original equation. Reject any value that makes an original denominator zero.

261. 261 kortelė

     Klausimas

     Residual?

     Atsakymas

     Actual value minus predicted value. A positive residual means the point lies above the model.

262. 262 kortelė

     Klausimas

     Sphere volume?

     Atsakymas

     $V=(4/3)πr^3$.

263. 263 kortelė

     Klausimas

     Boundary for a two-variable linear inequality?

     Atsakymas

     Replace the inequality with equality to draw the boundary line, then test a point for the shaded side.

264. 264 kortelė

     Klausimas

     Why check a solution after squaring both sides?

     Atsakymas

     Squaring can introduce an extraneous solution. Substitute each candidate into the original radical equation.

265. 265 kortelė

     Klausimas

     Positive correlation?

     Atsakymas

     Larger values of one variable tend to occur with larger values of the other. It does not prove causation.

266. 266 kortelė

     Klausimas

     Rectangular-prism surface area?

     Atsakymas

     $SA=2(lw+lh+wh)$.

267. 267 kortelė

     Klausimas

     Check a proposed system solution?

     Atsakymas

     Substitute the ordered pair into both original equations. It must make both true.

268. 268 kortelė

     Klausimas

     Simplify $√72$.

     Atsakymas

     $6√2$. Factor $72=36×2$ and take $√36$ outside the radical.

269. 269 kortelė

     Klausimas

     Extrapolation risk?

     Atsakymas

     A model may not keep the same pattern outside the observed data range.

270. 270 kortelė

     Klausimas

     Area scale factor when lengths double?

     Atsakymas

     4. Area scales with the square of the length factor: $2^2=4$.

271. 271 kortelė

     Klausimas

     Horizontal line slope?

     Atsakymas

     0. Its y-value does not change as x changes.

272. 272 kortelė

     Klausimas

     Inverse function setup?

     Atsakymas

     Write $y=f(x)$, swap $x$ and $y$, then solve for $y$. Restrict the domain when needed to make the inverse a function.

273. 273 kortelė

     Klausimas

     Percentage points versus percent change?

     Atsakymas

     A rate moving from 40 percent to 50 percent rises 10 percentage points but 25 percent relative to 40.

274. 274 kortelė

     Klausimas

     y-intercept in a context?

     Atsakymas

     The predicted or initial output when the input is zero; check whether zero is meaningful in the situation.

275. 275 kortelė

     Klausimas

     Quadratic maximum or minimum from vertex form?

     Atsakymas

     The vertex value is $k$ in $a(x-h)^2+k$; it is a minimum if $a>0$ and a maximum if $a<0$.

276. 276 kortelė

     Klausimas

     Line parallel to $y=mx+b$ through $(p,q)$?

     Atsakymas

     $y-q=m(x-p)$. Parallel lines keep the same slope.

277. 277 kortelė

     Klausimas

     Graph of $f(x-h)+k$?

     Atsakymas

     Shift the graph of $f$ right $h$ units and up $k$ units.

278. 278 kortelė

     Klausimas

     Population versus sample?

     Atsakymas

     The population is the full group of interest; a sample is the subset actually observed.

279. 279 kortelė

     Klausimas

     Linear model from initial value $b$ and rate $m$?

     Atsakymas

     $y=mx+b$. The initial value is the output at input zero.

280. 280 kortelė

     Klausimas

     Function composition $(f∘g)(x)$?

     Atsakymas

     $f(g(x))$. Evaluate the inner function $g$ first.

281. 281 kortelė

     Klausimas

     Density?

     Atsakymas

     Mass divided by volume. Keep the units consistent.

282. 282 kortelė

     Klausimas

     Vertical line slope?

     Atsakymas

     Undefined because $Δx=0$, which would require division by zero.

283. 283 kortelė

     Klausimas

     Nonlinear system with one equation solved for $y$?

     Atsakymas

     Substitute that expression for $y$ into the other equation, solve for $x$, then find each matching $y$.

284. 284 kortelė

     Klausimas

     Weighted percentage across unequal groups?

     Atsakymas

     Convert each percentage to a count or weight, add the successes, then divide by the combined total.

285. 285 kortelė

     Klausimas

     Line perpendicular to a nonzero finite slope $m$ through $(p,q)$?

     Atsakymas

     Use slope $-1/m$ in $y-q=(-1/m)(x-p)$, when $m$ is nonzero and finite.

286. 286 kortelė

     Klausimas

     Cancel a common factor in a rational expression?

     Atsakymas

     Cancel factors, not terms, and keep every restriction from the original denominator.

287. 287 kortelė

     Klausimas

     Solve a linear equation containing fractions?

     Atsakymas

     Multiply every term by the least common denominator first, then solve the resulting linear equation.

288. 288 kortelė

     Klausimas

     Rewrite $a^{2x}$ using base $a^x$.

     Atsakymas

     $(a^x)^2$. This can turn an exponential expression into a quadratic form.

289. 289 kortelė

     Klausimas

     Rate units check?

     Atsakymas

     Write the numerator and denominator units explicitly, such as kilometers per hour, then convert only if the requested units differ.

290. 290 kortelė

     Klausimas

     Strict versus inclusive inequality endpoint?

     Atsakymas

     Use an open point for $<$ or $>$ and a closed point for $≤$ or $≥$.

291. 291 kortelė

     Klausimas

     Even-multiplicity zero on a graph?

     Atsakymas

     The graph touches the x-axis and turns around; it does not cross there.

292. 292 kortelė

     Klausimas

     System word problem: first setup step?

     Atsakymas

     Define the variables with units, then translate two independent relationships into equations.

293. 293 kortelė

     Klausimas

     When does a quadratic have exactly one real solution?

     Atsakymas

     When $b^2-4ac=0$. The repeated root is the vertex's x-coordinate.

294. 294 kortelė

     Klausimas

     Two-way table: denominator for “among group B”?

     Atsakymas

     Use the total for group B, not the grand total. The wording makes B the condition.

295. 295 kortelė

     Klausimas

     Find an input when $f(x)=k$.

     Atsakymas

     Set the function rule equal to $k$ and solve for $x$; there may be zero, one, or several inputs.

296. 296 kortelė

     Klausimas

     Graph of $-f(x)$?

     Atsakymas

     Reflect the graph of $f(x)$ across the x-axis.

297. 297 kortelė

     Klausimas

     Three consecutive integers starting with $n$?

     Atsakymas

     $n$, $n+1$, and $n+2$.

298. 298 kortelė

     Klausimas

     Line–parabola intersections from a substituted quadratic?

     Atsakymas

     Use its discriminant: positive means two intersections, zero one tangent intersection, and negative none.

299. 299 kortelė

     Klausimas

     Linear equation with no solution: coefficient pattern?

     Atsakymas

     After simplification, the variable terms cancel and leave a false statement, such as $0=5$.

300. 300 kortelė

     Klausimas

     Zeros of a function on its graph?

     Atsakymas

     The x-coordinates where the graph meets the x-axis, so $f(x)=0$.

300 kortelių

Digital SAT Flashcards: Math, Grammar & Words in Context

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