The y intercept is seven so you would start by placing a point on (0,7). Then you count Down four points because the slope is a negative number and then count nine points to the right. You would have to keep counting down four points and the right nine points until your line was long enough.
Vertical angels is the answer
This differs on what number you want to talk about. 1 is the hundreds, 8 is the tenths, 7 is the ones.
