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Mathematics>Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

The graph of y = f(x) is shown above. If 0 less than or equal to t less than or equal to 5, and if (t,v) is on the graph of function f, which of the following must be true?

(A) negative 10 less than or equal to v less than or equal to negative 5
(B) negative 5 less than or equal to v less than or equal to 0
(C) 0 less than or equal to v less than or equal to 5
(D) 5 less than or equal to v less than or equal to 10
(E) 10 less than or equal to v less than or equal to 15

答案和解析

答案：D

解析：

The second coordinate of a point on the graph corresponds to v. From the graph, you can see that for 0 less than or equal to t less than or equal to 5, the smallest value of v is 5 and the greatest value is 10, so 5 less than or equal to v less than or equal to 10.