Answer
$y=x+2$ or $x-y=-2$
Work Step by Step
Step 1. Given $L$ is perpendicular to $y=-x, (m'=-1)$, we can find the slope $m=-\frac{1}{m'}=1$.
Step 2. Using the point $(-1,1)$, we can write the equation as $y-1=x+1$ or $y=x+2$ or $x-y=-2$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 1 - Graphs - 1.3 Lines - 1.3 Assess Your Understanding - Page 31: 46
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