Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 5 - Trigonometric Functions - Section 5.4 Graphs of the Sine and Cosine Functions* - 5.4 Assess Your Understanding - Page 435: 107

Answer

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

Work Step by Step

1. Given $h(x)=3|x+2|-1$, to find the x-intercepts, let $y=0$, we have $3|x+2|-1=0 \Longrightarrow x+2=\pm\frac{1}{3} \Longrightarrow x=-\frac{7}{3}, -\frac{5}{3} $ 2. To find the y-intercept, let $x=0$, we have $h(0)=3|0+2|-1=5$. 3. Thus the intercepts are $(-\frac{7}{3},0)$, $(-\frac{5}{3},0)$, $(0,5)$.
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