Greetings! Lets solve this shall we ?
So, we must find the equation of a line that must possess these end points. So, we pull out the equation of the slope to obtain m = (5-(-1)) / (3-3) = 6/0. This represents the line having infinite vertical rise and no horizontal shift. Therefore, the equation of the line that has the given endpoints is x = 3.
I hope this helped!