Question

Find the slope of the line containing the points (3,8) (1,8)

Answer 1

hi 

slope of a line accordind to two point form is given by

tan∅=y₂-y₁/x₂-x₁

∴ tan∅=8-8/1-3

⇒ tan∅ = 0

∴∅=0°

hence the line lies in the x axis.

Answer 2

The answer is zero. 8-8=0. 3-1=2. 2/0 equals 0