Which equation represents y= -x^2 + 6x + 7 in vertex form ?

Question

asked Sep 27, 2019 181k views

1 Answer

Tameeka · Answer 1 · 2019-10-02T17:56:09+0000

we are given

y= -x^2 + 6x + 7

we can use vertex form parabola formula

y= a(x-h)^2+k

so, we can complete x square

y= -(x^2 - 6x - 7)

y= -(x^2 - 6x - 7+3^2-3^2)

y= -(x^2 - 6x +3^2-16)

y= -(x-3)^2+16

so, option-A........................Answer