Answer
See explanation
Work Step by Step
We check by doing the following,
If the statement is true, then so are the following equalities,
i) $f(y)=f(-y)$
ii) $f(x)=f(-x)$
iii) $f(-x,-y) = f(x, y)$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 1, Equations and Graphs - Chapter 1 Review - Concept Check - Page 168: 5
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