Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 9 - Section 9.2 - Inverse Functions - Exercise Set - Page 550: 16

Answer

not a one-to-one function

Work Step by Step

The graph involves a function (as stated) so there is no need to do the vertical line test. Notice that the horizontal line $y=-2$ will pass through an infinite number of points on the graph. This means that the graph fails the horizontal line test. Therefore, the graph DOES NOT represent a one-to-one function.
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