Question

Which equation is y = 9x2 + 9x – 1 rewritten in vertex form?

Answer 1

Please see the attachment

Answer 2

Answer:

y=9x^2+9x+1

y+1/9=x^2+x

y+1/9=x^2+x-1/4+1/4

y+1/9+1/4=(x+1/2)^2

1/36[4y+13]=(x+1/2)^2

(x+1/2)^2=1/9[y+13/4)=]

vertex = (-1/2,-13/4)

Step-by-step explanation: