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

asked Jan 7, 2019 171k views

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4 votes

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

Speck answered Jan 11, 2019

by Speck

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