Answer
That the slope is -1
Work Step by Step
the slope of $f$ is m
$m=\frac{\triangle y}{\triangle x}=\frac{-\Delta x}{\Delta x}=-1$
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 1 - Section 1.3 - Linear Functions and Models - Exercises - Page 94: 118
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