Answer
$\boxed{\textbf{Is a function.}}$
Work Step by Step
A function is a rule that assigns to each element from one set exactly one element from another set.
For each x-value,
exactly one y-value is assigned, so this
is a function.
Calculus with Applications (10th Edition)
by Lial, Margaret L.; Greenwell, Raymond N.; Ritchey, Nathan P.
Published by
Pearson
ISBN 10:
0321749006
ISBN 13:
978-0-32174-900-0
Chapter 2 - Nonlinear Functions - 2.1 Properties of Functions - 2.1 Exercises - Page 54: 3
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