Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 9 - Section 9.1 - Inverse Functions - 9.1 Exercises - Page 587: 3



Work Step by Step

Only one of the graphs is one-to-one. To determine if a graph is one-to-one, we use the horizontal line test, meaning that every horizontal line drawn will pass through the graph at only one point. The graph in the answer A is the only graph that passes the horizontal line test (see attached photo).
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