Question 37054
lets denote M(x,y) the midpoint

Given two points, the formula to the midpoint is: 

M = [(x1+x2)/2,(y1+y2)/2]

The points are G(10, -8) and H(4, -3)
Then

M= [(10+4)/2,(-3+(-8))/2]
M= [(14)/2,(-11)/2]

Finally the coordinate of the midpoint of G and H are:

M= (7, -3.5)