VanessaHudgens
VanessaHudgens VanessaHudgens
  • 01-08-2018
  • Mathematics
contestada

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

Which equation represents y x2 6x 7 in vertex form class=

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rejkjavik rejkjavik
  • 01-08-2018

we are given

[tex] y= -x^2 + 6x + 7 [/tex]

we can use vertex form parabola formula

[tex] y= a(x-h)^2+k [/tex]

so, we can complete x square

[tex] y= -(x^2 - 6x - 7) [/tex]

[tex] y= -(x^2 - 6x - 7+3^2-3^2) [/tex]

[tex] y= -(x^2 - 6x +3^2-16) [/tex]

[tex] y= -(x-3)^2+16 [/tex]

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

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