Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Mid-Chapter Check Point: 21

Answer

$f(x)>0$ when $x$ is between $-6$ and $2$ (but not including -6 and 2). In interval notation, $f(x) >0$ when $x$ is within the interval $(-6, 2)$.

Work Step by Step

Note that $f(x)=y$. The graph has $y>0$ when $x$ is in the interval $(-6, 2)$, which does not include -6 and 2. Thus, $f(x) >0$ when $x$ is greater than -6 but less than 2.
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