If I have two points on positive cartesian coordinates, how do I find:
- The slope of a line between those points
- the increment amount to get from $(x_1,y_1)$ to$(x_2,y_2)$ one dot at a time.
What I know so far is $m=(y_2-y_1)/(x_2-x_1)$
But that gives me a single number, I need a pair of numbers I can add to $x$ and $y$ over the course of a series of iterations to reach $(x_2,y_2)$.