Answer
See below.
Work Step by Step
The relation is still a function because to each $x$ value there belongs at most $1$ y-value. (The y-values belonging to different $x$'s don't have to be unique.)
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
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 - Guided Practice for Example 3 - Page 74: 3
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