how can I figure out the coordinates of the midpoint relating to the coordinates of the endpoint

Question

(0,20), (m) <— (0,0), (0,-20)

Answer 1

The formula for finding the midpoint of a line segment is

( 1/2(x1+x2) , 1/2(y1+y2) )

Essentially, find the average of the x-values of the two endpoints and that's the x-value of the midpoint, and the average of the y-values of the endpoints will be the y-value of the midpoint.

So if your two endpoints are (0,0) and (0,-20) we would say

x = 1/2 ( 0 + 0) = 1/2 (0) = 0

y = 1/2 (0+ -20) = 1/2 (-20) = -10

Therefore, the midpoint is (0,-10).