M is the midpoint of line AN, A has coordinates (-6,-6) and M has coordinates (1,2). Find the coordinates of N.

Answer 1

N is as far from M as M is from A. That is,

AM = M-A = (1,2)-(-6,-6) = (7,8)
AM = MN, so
AN = M+AM = (1,2)+(7,8) = (8,10)

Answer 2

Thank you.