Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 9 - Section 9.2 - Composite and Inverse Functions - Exercise Set - Page 687: 46


The graph does have an inverse function.

Work Step by Step

The Horizontal line test says that if a function can be intersected by a horizontal line more than once, it doesn't have an inverse. Otherwise, it has an inverse No horizontal line will intersect the graph in more than $1$ point. Thus by the Horizontal line test, the graph does have an inverse function.
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