Obaid J. answered 10/23/21
Effective Tutor For Elementary Through High School Mathematics
The standard form of two points, also known as Two Point Form, is written as y - y2 = m (x-x1) where
m = y2-y1/x2 - x1. You are given two points (11,8) and (11,-10); let's have (11,8) be our first coordinate P1 and (11,-10) be our second coordinate P2. Normally, we would first find the slope m = y2-y1/x2 - x1, but notice we get (8-(-10)/0), which we cannot evaluate. If we plot these two points on a graph, we will see that both P1 and P2 are at the same x-value of 11, where there is no slope that can exist with these two points. However, we can say that the equation passing through this line is x = 11 because once we draw a vertical line at x-coordinate 11, we see that 8 and -10 are y-coordinates on this line.