Answer
$Slope: m=-\frac{A}{B}$
$y-intercept: b=\frac{C}{B}$
Work Step by Step
$Ax+By=C$
$By=-Ax+C$
Divide by B.
$y=-\frac{A}{B}+\frac{C}{B}$
Now equation of line is in form $y=mx+b.$
Since the slope is $m$ and the y-intercept is $b$,
$Slope: m=-\frac{A}{B}$
$y-intercept: b=\frac{C}{B}$