The midpoint of the line segment between (x,y) and (2,4) is (17,8). Find (x,y).
(2 + x) / 2 = 17 ( 4 + y) / 2 = 8
(2 + x) = 2 * 17 (4 + y) = 8 * 2
2 + x = 34 4 + y = 16
x = 34 - 2 y = 16 - 4
x = 32 y = 12