Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 9 - Quadratic Functions and Equations - 9-2 Quadratic Functions - Lesson Check - Page 544: 5

Answer

$a$: affects the direction of the graph (and the axis of symmetry) $b$: affects the axis of symmetry $c$: the y-intercept of the graph

Work Step by Step

If we let $x=0$, then we have $y=c$ (the y-intercept of the graph). Depending on whether $a$ is positive or negative, the direction of the graph is affected (opens up or opens down, respectively). $-b/2a$ determines the axis of symmetry.
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