The endpoint of line CD are given.find the coordinates of the Midpoint M.
1: C(3,-5) and D(7,9)
2: C(-8,-6) and D(-4,10)
$$M(x,y) = \left(\frac{3+7}{2},\frac{-5+9}{2}\right) = (5,2)$$
$$M(x,y) = \left(\frac{-8-4}{2},\frac{-6+10}{2}\right) = (-6,2)$$
