DOES ANYONE KNOW HOW TO DIVIDE FRACTIONS(kills himself)

[supermariogalaxy]

Hey are you doing umm the thing where you have to draw a line through the coordinate plane??? I remember that it starts with an "s"...I think...

 

EDIT: I remember now..It's called slope...Oh and what are you, in 10-11th grade??? Shouldn't you know how to do this already???