Answer
Not a function
Work Step by Step
Domain = {1, 3}
Range = {2, 4, 5}
Since there are two different ordered pairs, (3, 4) and (3, 2), have the same first $x$-input coordinate with different $y$-output, it is not a function.
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Appendix A - Section A.1 - Introduction to Functions - A.1 Problem Set - Page 486: 12
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