First we must find out the slope of the points
The equation for slope is
[tex]\frac{y_{2} - y_{1}}{x_{2}-x_{1}}[/tex]
Let's plug in our points
[tex]\frac{3 - 3 }{5 -1 } = \frac{0}{4}[/tex]
Our slope is 0
When lines are parallel, that means we have they have the same slope
So a line that is parallel to r would have a slope of 0!
