The formula for calculating the midpoint of two coordinates MN is expressed as;
M(X, Y) =[(x1+x2)/2, (y1+y2)/2]
Given the coordnates
Midpoint M(7, 3.5) and N (14, 7)
Required
Coordinates of N
From the formula;
X = x1+x2/2
From the coordinates given, X = 7, x1 = 14, we can get x2
7 = 14+x2/2
7(2) = 14+x2
14 = 14+x2
x2 = 14-14
x2 = 0
Similarly;
Y = y1+y2/2
From the coordinates given, Y = 3.5 and y1 = 7, we can get y2;
3.5 = 7+y2/2
2(3.5) = 7+y2
7 = 7 + y2
y2 = 7-7
y2 = 0
Hence the coordinate of M is at (0,0). Option D is correct