Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 2 Linear Equations and Functions - 2.1 Represent Relations and Functions - 2.1 Exercises - Skill Practice - Page 78: 40

Answer

(y = abs value of x) is the only function out of the three equations since it is the only equation that passes the vertical line test.

Work Step by Step

1. Draw out the graphs of the three equations 2. Perform a vertical line test on each graph 3. If the graph passes the vertical line test, then it is a function. If it fails to pass then it is not a function.
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