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: 50

Answer

$f^{-1}(x)=\frac{x - 7}{-5}$

Work Step by Step

f(x) = 7 - 5x y = 7 - 5x y - 7 = -5x $\frac{y - 7}{-5} = x $ $f^{-1}(x)=\frac{x - 7}{-5}$
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