how do you find slopes using the formula: m=y2,y1 x2,x1

Perito · Nov 2, 2009, 05:31 PM

Quote:

m=y2,y1 x2,x1

Boy, you've got me since that's not an equation.

However, if you say that (X1, Y1) and (X2, Y2) are a pair of coordinates, you can get the slope of a line drawn through these two points from the formula

$m = \frac {\Delta Y}{\Delta X}= \frac {(Y2-Y1)}{(X2-X1)}$

Note that it doesn't matter which point you pick for X1,Y1 and X2,Y2