Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 2 - Graphs and Functions - Quiz: 8

Answer

(a) $(-\infty, -3)$ (b) $(-3, +\infty)$ (c) There is no interval where the function's value is constant.

Work Step by Step

(a) The graph of the function is falling (decreasing) from the left up to $x=-3$. Thus, the function is decreasing in the interval $(-\infty, -3)$. (b) The graph of the function is rising (increasing) from $x=-3$ to the right. Thus, the function is increasing in the interval $(-3, +\infty)$. (c) There is no part in the graph where the function's value is constant.
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