Answer:
y=1/2x-2
Explanation:
To find the slope find two perfect points or "pretty points" and rise/run it to get the slope.
I used the y-intercept (0,-2) and (2,-1)
To move from the y-intercept to the next point I rose 1 and and went over 2, or 1/2.
You can also use the equation y-y/x-x on the two points to get the slope, but I used the other way.