The formula for midpoint = x1 + x22\;\frac{x_1\;+\;x_2}{2}2x1+x2, y1 + y22\;\frac{y_1\;+\;y_2}{2}2y1+y2
(-4,-2) = (x,y)
x = x1 + x22\;\frac{x_1\;+\;x_2}{2}2x1+x2
-4 = −8 + p2\;\frac{-8\;+\;p}{2}2−8+p
-4 * 2 = -8 + p
-8 + 8 = p
: p = 0
y = y1 + y22\;\frac{y_1\;+\;y_2}{2}2y1+y2
-2 = −12 + q2\;\frac{-12\;+\;q}{2}2−12+q
-2 * 2 = -12 + q
-4 + 12 = q
: q = 8
