Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.8 - Inverse Functions - Exercise Set - Page 271: 77

Answer

The function has an inverse. (refer to the step-by-step part below for the explanation and the graph)

Work Step by Step

Use a graphing utility to graph the function. (refer to the attached image below for the graph) All horizontal lines will pass through the graph at exactly one point. This means that the graph passes the horizontal line test, therefore the function has an inverse function.
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