Answer
this graph is not a function
Work Step by Step
on this graph you can draw a vertical line and it will intersect the graph on two points, meaning that at least two coordinate pairs have the same x values, so it cannot be 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: 20
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