Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 6 - Trigonometric Functions - 6.4 Graphs of the Sine and Cosine Functions - 6.4 Assess Your Understanding - Page 411: 105

Answer

$(-\frac{7}{3},0),(-\frac{5}{3},0)$, $(0,5)$

Work Step by Step

Step 1. Find the x-intercept(s) by letting $h(x)=0$, we have $3|x+2|-1=0\longrightarrow |x+2|=\frac{1}{3}\longrightarrow x=-2\pm\frac{1}{3}$. Thus $x=-\frac{7}{3},-\frac{5}{3}$ or $(-\frac{7}{3},0),(-\frac{5}{3},0)$ Step 2. Find the y-intercept by letting $x=0$, we have $h(0)=5$ or $(0,5)$
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