Question

What is the slope of the line containing (6,-7) and (5,-9)

Answer 1

the slope of the line containing the points (x1,y1) and (x2,y2) is
(y2-y1)/(x2-x1)

given
(6,-7) and (5,-9)

slope=(-9-(-7))/(5-6)=(-9+7)/(-1)=-2/-1=2

the slope is 2

Answer 2

m=∆y/∆x
m=(-9+7)/(5-6)
m=-2/-1
m=2 is your final answer. Hope it help!