Answer :
rearrange equation to get y as subject
-1x-10y = 20
10y = -1x - 20
y = -1x/10 -2
so the slope is -1/10 and the y intercept -2
-1x-10y = 20
10y = -1x - 20
y = -1x/10 -2
so the slope is -1/10 and the y intercept -2
[tex]-x-10y=20\\
-10y=x+20\\
\boxed{y=-\frac{1}{10}x-2}\\\\
\boxed{m=-\frac{1}{10}}\\\\
-0-10y=20\\
-10y=20\\
\boxed{y=-2}
[/tex]