Answer
.25
Work Step by Step
We find the value of x for the vertex, given as $\frac{-b}{2a}$. In order to do this, we plug the provided values for a and b into the equation.
$-b/2a = -1/(-4)(2) = .125 $
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 9 - Quadratic Functions and Equations - 9-1 Quadratic Graphs and Their Properties - Practice and Problem-Solving Exercises - Page 552: 62
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