a. -5,-3 b. 5, -15 what is the midpoint of a and b?
The midpoint is found halfway between the two x co-ordinates and
halfway between the two y co-ordinates.
(-5, -3) (5, -15)
x: 5 - (-5) = 10 (x2 - x1)
10 / 2 = 5
-5 + 5 = 0 (add to x1)
y: -15 - (-3) = -12 (y2 - y1)
-12 / 2 = -6
-3 + (-6) = -9 (add to y1)
Midpoint: (0, -9)