Find the axis of the graph of the function. f(x) = 4x^2 + 8x + 7

Question

asked Jan 7, 2019 171k views

1 Answer

Speck · Answer 1 · 2019-01-11T22:35:23+0000

Convert to vertex form:-

f(x) = 4(x^2 + 2x) + 7

= 4[(x + 1)^2 - 1] + 7

= 4(x + 1)^2 + 3

The axis will be the vertical line x = -1