contestada

Which quadratic function opens down and has a vertex with a negative y value?
A. f(x)= 5x^2-18
B. g(x)= -4x^2+7x+20
C. h(x)= -1/2(x-9)^2+1
D. j(x)= -10(x+6)^2 -3

Respuesta :

Answer:

It's D.

Step-by-step explanation:

The function with a negative coefficient of x^2 will open downwards so its either B, C or D. The y value of the vertex is the last constant.

So the answer is D  with negative y value -3.

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