Answer
$y=2x-5$
Work Step by Step
Find two points:
$(3,1) \rightarrow (x_1,y_1)$
$(-1,-7) \rightarrow (x_2,y_2)$
Use point-slope form: $m=\frac{1-(-7)}{3-(-1)}=2$
$y=mx+b$
$y=2x+b$
Substitute $(3,1)$:
$1=2(3)+b$
$b=-5$
$y=2x-5$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 3 Linear Systems and Matrices - 3.2 Solve Linear Systems Algebraically - 3.2 Exercises - Mixed Review - Page 167: 73
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