Answer:
Start with a point at (0,4) on the y-axis.
From there count "down 3 units, right 1 unit" to get the next point at (1,1).
Repeat the "down 3, right 1" to get a second point at (2,-2).
Connect the dots.
The slope of -3 means -3/1 or "down 3, right 1".