MATH SOLVE

5 months ago

Q:
# Which equation is y=9x^2+9x-1 re-written in vertex form

Accepted Solution

A:

Answer:A. y = 9(x +1/2)^2 - 13/4.Step-by-step explanation: y = 9x^2 + 9x - 1y = 9(x^2 + x) - 1y = 9 [ (x + 1/2)^2 - 1/4] - 1y = 9 (x + 1/2)^2 - 9/4 - 1y = 9(x +1/2)^2 - 13/4.