Apply the midpoint formula:
Where:
m = (7, 3.5)
(x1,y1) = (xm,ym)
(x2,y2) = (xn,yn) = (14,7)
For the x coordinate:
mx = (x1+x2) /2
7 = (xm + 14 ) /2
Solve for xm
7(2) = xm +14
14 = xm +14
14-14 = xm
0 = xm
y-coordinate:
my = (y1+y2) /2
3.5 = (ym + 7 ) /2
3.5 (2) = ym+7
7 = ym +7
7-7 = ym
ym =0
Coordinate of point m = (xm,ym) = (0,0) - option A