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Nonlinear Functions

SAT Math· difficulty 4/5

The function f(x)=a(x−2)2+5f(x) = a(x-2)^2 + 5 has f(0)=9f(0) = 9. What is aa?

  • A

    −1-1

  • B

    22

  • C

    44

  • D

    11

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Explanation

f(0)=a(4)+5=9f(0) = a(4) + 5 = 9, so 4a=44a = 4, a=1a = 1.

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