to find the midpoint between two sets of coordinates, add the 2 X numbers and divide by 2, then add the two Y numbers and divide by 2
in (7,10) x = 7 y = 10
in (5,-8) x = 5 y = -8
5+7 = 12
12/2 = 6
10 + -8 = = 10-8 = 2
2/2 = 1
so the midpoint would be (6,1)
