find the point where the line crosses the y axis, in this case it would be -3. next, find the next point where the line directly crosses a spot on the graph, this would be 3 on the x axis. find how many squares on the graph it took to get there, it would be up 3 and right 3, this would make it 3/3x, or just 1x. your equation is y=1x-3
