Question 289610
First of all the equation you posted is in the slope intercept form.
It has all the information you need to graph it.
Remember that -4 is the y intercept shown below.
y=mx+b
1/2 is the rise over run.
Start with x=0
y=1/2(0)-4
y=-4
(0,-4)
Now from there go right two and up one for next point, and so on.
Good luck.