Determine the vertex form of g(x) = x2 + 2x – 1. Which graph represents g(x)?

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asked Nov 3, 2020 46.2k views

2 Answers

Zorik · Answer 1 · 2020-11-06T06:09:42+0000

g(x) = x² + 2x - 1

Since its a parabola we have the formula to the vertex

(Xv, Yv) = (-b/2a, -Δ/4a)

(Xv, Yv) = (-2/2.1, -(2² -4.1.(-1))/4.1)

(Xv, Yv) = (-1, -2)