Question

The function g(x) is a transformation of the quadratic parent function, fx):

What function is g(x)?
90x)
15(x)
A. g(x) = 4x²
OB. g(x) = ² ->
O c. g(z) = -1¹
D. g(x)=-4x²

Answer 1

Answer: D

Explanation:

The graph is narrower, so the coefficient of
`x^2` has an absolute value more than 1.

• Eliminate B and C.

Also, because g(x) opens down, the coefficient of
`x^2` is negative.

• Eliminate A.

This leaves D as the answer.