Algebra
posted by Nancy on .
Find the slope, if it exists, of the line containing the pair of points
(9,1) and (10,7)
The slope m = __
or the slop is undefined

m=(y1y2)/(x1x2)
does not exist if the denominator = 0 
Thank you, I could not remember the formula to use.
this is what I got:
M = 1 + 7/ 9  10 = 8/1
I'm still not sure what the slope is.
Thanks in advance for you help. 
(1+7)/(910)
= 8/1
= 8