Respuesta :

Its the difference between the y- values divided by the distance between the corresponding x values. Or  its sometimes called rise / run.
carlafossil320
The formula to use is :
[tex] \frac{ y_{2}-y_{1} }{x_{2}-x_{1}} [/tex]
where the two coordinates are in the format (x1, y1) and (x2, y2)