SAT Math Multiple Choice Practice Question 126: Answer and Explanation

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Question: 126

16.

The graph above shows y = f(x). Which point would have to appear on the graph of y = 2f(x) + 4?

A. (-1, 0)
B. (0, 1)
C. (1, 0)
D. (2, -2)
E. (10, 0)

Correct Answer: D

Explanation:

D. Performing this transformation doubles all the y-coordinates and then adds 4 to them, without changing the x-coordinates. Doing so with each of the five points on the original graph gives you (-1, 4), (0, -2), (1, -4), (2, -2), and (3, 4). Only Choice (D) is in the list.

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