#### Answer

Slope: $-2$
$y$-intercept: $(0,20)$

#### Work Step by Step

Rearrange the equation into slope-intercept form.
$2x+y=20$
$y=-2x+20$
The slope is the coefficient of $x$, and the constant term is the $y$ value in the $y$-intercept of $(0,y)$.
Slope: $-2$
$y$-intercept: $(0,20)$