Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 2 - 2.7 - Inverse Functions - 2.7 Exercises - Page 228: 33


The inverse is not a function.

Work Step by Step

We have the inverse function: $x=-1,0,1,2,3,4$ and $f(x)= -2,1,2,1,-2,-6$ We need to verify that the inverse is a function. Thus, $f(-1)=-2$ and $f(3)=-2$ So, it has been noticed that for $y=-2$, there are two corresponding values of $x$. Therefore, the inverse is not a function.
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