Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 2 - Graphs and Functions - 2.3 Functions - 2.3 Exercises - Page 215: 29


The relation does not define a function.

Work Step by Step

Note some vertical lines (e.g., $x=4$) will pass through the graph at two points. This means that the graph fails the vertical line test. Thus, the given graph does not represent a function.
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