Hello!
First you have to get the equation into slope-intercept form
Slope-intercept form is y = mx + b
-2x + 4y = -8
Add 2x to both sides
4y = 2x - 8
Divide both sides by 4
y = 1/2 x - 2
The graph is a line that goes through the points (0, -2), (-2, -3), (2, -1) and
(4, 0)
Hope this helps!