## Intermediate Algebra (12th Edition)

$m=\frac{3}{7}$
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 $m=\frac{3}{7}$.