Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 2 - Summary Exercises - Finding Slopes and Equations of Lines - Page 178: 4



Work Step by Step

A line in slope-intercept form has the equation: $y=mx+b$ ($m=slope$, $b=y-intercept$) We put the equation into slope-intercept form: $3x-7y=21$ $-7y=21-3x$ $-7y=-3x+21$ $y=\frac{3}{7}x-3$ Thus the slope is $m=\frac{3}{7}$.
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