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Selct the correct first step for finding the y-coordinate of the vertex of the equation y=-2x^2+2x-3, given that the x-coordinate of the vertex is 1/2.

A. -(4/4)+ (4/4)-3
B. 8/4-3
C. -1/2
D. -2(1/2)^2+ 2(1/2)-3

Respuesta :

D

The first step is to substitute x = [tex]\frac{1}{2}[/tex] into the equation

The first step is therefore

y = - 2([tex]\frac{1}{2}[/tex])² + 2 ([tex]\frac{1}{2}[/tex]) - 3 → D


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