Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 9 - Review: 12


Not one-to-one

Work Step by Step

We are given that $f={(-5,5),(0,4),(13,5),(11,-6)}$. A function is one-to-one if each x-value (input) corresponds to only one y-value (output) and also each y-value (output) corresponds to only one x-value (input). Therefore, this function is not one-to-one, because the y-value 5 corresponds to more than one x-value (-5 and 13).
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