College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 2, Functions - Section 2.8 - One-to-One Functions and their Inverses - 2.8 Exercises: 49

Answer

$f^{-1}(x) = \frac{x - 5}{3}$

Work Step by Step

f(x) = 3x + 5 y = 3x + 5 y - 5 = 3x $\frac{y - 5}{3} = x$ $\frac{x - 5}{3} = f^{-1}(x)$
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