Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 4 - 4.1 Graph Quadratic Functions in Standard Form - 4.1 Exercises - Skill Practice - Page 240: 19


A negative was dropped.

Work Step by Step

The student forgot that the x-coordinate of the vertex is $-\frac{b}{2a}$. Thus, the answer should have been -3, not 3.
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