Or another way of writing it, it's change in y over change in x. So let's figure out what the change in y over the change in x is for this particular case. So the change in y is equal to what? Well, you can take this guy as being the first point or that guy as being the first point. But since this guy has a larger x and a larger y, let's start with him. So the change in y between that guy and that guy is this distance right here. So let me draw a little triangle.