Question 172585
Find the slope of the line which passes through (1, 1) and (2,-2)

To find the slop of line passing through two points you use the following formula:

m={{{(y1-y2)/(x1-x2)}}}
where (x1,y1) are the coordinates of the first point (1,1)
and (x2,y2) coordinates of second point (2,-2)
Substitute all given numbers in the formula and calculate m