Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 5 - Cumulative Test for Chapters 3-5 - Page 416: 18



Work Step by Step

$f(x)=a(x-k)^2+h~~$ (Standard form, where $(k,h)$ is the vertex) $f(x)=a(x-3)^2-2$ $f(x)=a(x-3)^2-2$ Use the point $(0,4)$ to find $a$: $4=a(0-3)^2-2$ $4+2=a(9)$ $a=\frac{6}{9}=\frac{2}{3}$ $f(x)=\frac{2}{3}(x-3)^2-2$
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