Answer
The slope is $5$, and the $y-$ intercept is $8$.
Work Step by Step
The given equation is
$\Rightarrow -5x=8-y$
Add $5x+y$ to each side.
$\Rightarrow -5x+5x+y=8-y+5x+y$
Simplify.
$\Rightarrow y=5x+8$
The slope-intercept form is
$\Rightarrow y=mx+b$
$y-$intercept is $b=8$.
The slope is $m=5$
Hence, the slope is $5$, and the $y-$ intercept is $8$.