Answer
$f(x)=3x-1$
Work Step by Step
Since the rate of change of the function is $3$, we know the slope is $3$. Since the initial value is $-1$, we know the y-intercept is $-1$. Thus the equation of the line must be: $f(x)=3x-1$.
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 2.5 - Linear Functions and Models - 2.5 Exercises - Page 232: 27
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