5道SAT数学练习题及答案

2022-05-18 03:45:37

  下面为大家整理的是5道

  1.The graph of is shown above. If , and if is on the graph of , which of the following must be true?

  Answer Choices

  (A)

  (B)

  (C)

  (D)

  (E)

  2.If , what is the value of ?

  Answer Choices

  (A)

  (B)

  (C)

  (D)

  (E) It cannot be determined from the information given.

  3.If , which of the following must be equivalent to ?

  Answer Choices

  (A)

  (B)

  (C)

  (D)

  (E)

  4.If , which of the following statements must also be true?

  Answer Choices

  (A) None

  (B) only

  (C) only

  (D) only

  (E) and

  5.If the function is defined by , where , for which of the following values of is undefined?

  Answer Choices

  (A) None

  (B) only

  (C) only

  (D) and only

  (E) , , and

  Explanation

  1.The correct answer is D

  The second coordinate of a point on the graph corresponds to . From the graph, you can see that for , the smallest value of is and the greatest value is , so .

  2.The correct answer is A

  Since , it follows that , and so . Therefore, .

  3.The correct answer is E

  If , then , so .

  4.The correct answer is E

  The quantity can be expressed as . If , then and . Since , either or or both. Therefore, statement must be true, but statement , , is not always true. For statement , you can write , and since , it follows that . Therefore, both statements and must be true.

  5.The correct answer is C

  If , then . If , then . If , then , which is not defined because division by is undefined. Therefore, of the three values, , , and , the only one for which is undefined is . Thus the correct response is

  only.

  以上就是这5道SAT数学练习题及答案的详细内容,包括了一些常见的知识点。大家可以在备考的时候,对此加以适当的练习和应用,测试自己在数学方面知识点的掌握情况。

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