Answer
True.
Work Step by Step
To flip the function across the $y$-axis, replace $x$ with $-x$ to get $y=f(-x)$. Thus, this statement is true.
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 6 - Transformations of Functions and Their Graphs - Strengthen Your Understanding - Page 263: 7
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