Answer
a) Yes.
b) No.
Work Step by Step
a) Each x-value has its own y-value.
b) There are repeated y-values. ex. $(-4,3), (2,3)$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 2 - Review - Test - Page 236: 12
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