Find the slope of the line passing through each pair of poin

Find the slope of the line passing through each pair of points or state that the slop is undefined. Then indicate whether the line through the point rises, falls, is horizontal, or is vertical.

(-1,4) and (2,5)

Solution

slope = (5-4)/(2-(-1)) = 1/(2+1) = 1/3

slope = rise / run = 1/3

It means line rise by 1 unit and run right by 3 units

So line rises