Respuesta :

Given two points: A(x₁,y₁) and B(x₂,y₂), the slope of the line that passes through these points will be:
m=(y₂-y₁)/(x₂-x₁)
We take 2 points of this line: 
For example:
(0,3) and (5,3).

We compute the slope:
m=(3-3)/(5-0)=0/5=0

Answer: B) 0