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Mathematics>Standard Multiple Choice

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

A quadratic function is graphed in the xy-plane. The vertex of the parabola is at (-3,5) and the parabola crosses the y-axis at(0,2). Which of the following could be the equation for the function?

A.y=-2(x-3)²+5
B.y=-2(x+3)²+5
C.y=-1/3(x-3)²+5
D.y=-1/3(x+3)²+5

答案和解析

答案：D

解析：

Choice D is correct.