How do you find endpoints?

The fastest way to find the missing endpoint is to determine the distance from the known endpoint to the midpoint and then performing the same transformation on the midpoint.  In this case, the x-coordinate moves from 4 to 2, or down by 2, so the new x-coordinate must be 2-2 = 0.

Step-by-step explanation:

The endpoints of the line segment are given by (x 1, y 1) and (x 2, y 2 ). To find the x-coordinate of the midpoint, use the formula: x = (x 1 + x 2 )/2. To find the y-coordinate, use the same formula, but this time, using the y-coordinates of the endpoints: y = (y 1 + y 2 )/2. Hope this helps.