Question

Find the midpoint of M of the line segment joining the points C=(3,-7) and D=(-1,1)

Answer 1

average x = (3-1)/2 = 1
average y = (-7+1)/2 = -3
so ( 1, -3 )

Answer 2

C(3, -7), M(x, y), D(-1, 1).
CM = 1/2(CD).
x-3 = (-1-3)/2
X = 1.

y+7 = (1+7)/2
Y =