Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 7 - Functions and Graphs - 7.2 Domain and Range - 7.2 Exercise Set - Page 458: 20

Answer

Domain = $\{x\ |\ -2\leq x\leq 5\}$, or $[-2,5]$ Range = $\{x\ |\ -2\leq x\leq 4\}$, or $[-2,4]$

Work Step by Step

If the function is described by a graph, then the domain is the set of all first coordinates of the points on the graph. The range is the set of all second coordinates. The first coordinates of the points of the graph are between $-2$ and $5$, inclusive. Domain = $\{x\ |\ -2\leq x\leq 5\}$, or $[-2,5]$ The second coordinates range from $-2$ to $4$, inclusive. Range = $\{x\ |\ -2\leq x\leq 4\}$, or $[-2,4]$ Domain = $\{x\ |\ -2\leq x\leq 5\}$, or $[-2,5]$ Range = $\{x\ |\ -2\leq x\leq 4\}$, or $[-2,4]$
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