Convert 2x-2y=5 into y=mx+b
-2y=-2x+5
Divide all by -2 to get the Y-intercept and Slope.
y = x-2.5
The slope is 1, and the Y-Intercept is -2.5
y=x-4 is already in y=mx+b, so just graph this one.
The slope is 1, Y-Intercept is -4.
The graphs are listed in the picture.