m=slop
(x1,x2) (y1,y2) (5,-7) (8,-6)
x1=5,and x2=-7
y1=8,and y2=-6
formula for finding the slop for the line passing through some points is,
m=y2-y1/x2-x1
so putting the valeus of x1,x2,y1,y2
m=-6-8/-7-5
m=-14/-12
so minus signs of numerator and denomenator are cancled so,
m=7/6 this the slop of a line passing through a points (5,8)and(-7,-8)