Answer
-4
Work Step by Step
In order to find $f(-1)$, we must find the value of y at which $x=-1$. In other words, we must find the y-value on the graph of the line at $x=-1$. The y-value at $x=-1$ is -4, so $f(-1)=-4$.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 3 - Section 3.5 - Equations of Lines - Exercise Set - Page 173: 36
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