Question

A circle has a diameter with endpoints of (-2, 8) and (6, 4). What is the center of the circle?

a) (8, 12)
b) (4, 12)
c) (2, 6)

Answer 1

the X coordinate will be the center of your Xs
(6-(-2))/2 = 8/2 = 4

-2+4 = 6-4
2=2; (2,y)

the Y coordinate is the center of your Ys:
(8-4)/2 = 4/2 = 2
8-2 = 4+2
6=6

c) (2,6)