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 $
$f^{-1}(x)=\frac{x - 7}{-5}$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
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 - Page 263: 50
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