what are the coordinates of the vertex of the parabola described by the equation below?

y = -4(x - 3)2 + 5

a.(3, 5)
b.(5, -3)
, -5)
, 3)

By looking at the formula you can see that the quadratic part is 0 if you fill in x=3 (you know, 3-3 = 0). The outcome of the formula then becomes y= 0+5.

That gives us point (3,5) as the top of the parabola. So there you go, answer A.

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