Answer
(a, 2b)
Work Step by Step
To stretch a function vertically by 2 you multiply all of the y-coordinates by 2. This gives us (a, 2b).
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 2 - Functions and Graphs - Exercise Set 2.5 - Page 285: 150
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