Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 12 - Section 12.2 - Inverse Functions - Exercise Set - Page 851: 21


It is not the graph of a one-to-one function,

Work Step by Step

By using the horizontal line test(moving a horizontal line up and down), we can see that the graph intersects the horizontal line more than once. This means it can’t be a one-to-one function as some of the same outputs are obtained by two different inputs.
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