Find the coordinates of the other endpoint when you are given the midpoint (point m) and one of the endpoints (point p). p = (12, 4) and m = (-8, 8)

Midpoint formula : (x1 + x2)/2 , (y1 + y2)/2
(12,4)...x1 = 12 and y1 = 4

(12 + x) / 2 = -8
12 + x = -8 * 2
12 + x = -16
x = -16 - 12
x = - 28

(4 + y) / 2 = 8
4 + y = 8 * 2
4 + y = 16
y = 16 - 4
y = 12

so ur other point is (-28,12) <==

These graph is cross the yaxis and x axis two ways.