A function is defined as follows

For which X-values is y=-9?

Select all that apply.

x = 3

Step-by-step explanation:

y = -x²

f(3) = - (3)² = -9

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

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