Question

http://prntscr.com/95lk3o

Answer 1

@hartnn

Answer 2

the midpoint between the 2 points (x1,y1) and (x2,y2) is given by

(x1 + x2) (y1 + y2)
-------, -------
2 2

Answer 3

so you can find your midpoint by plugging in the values of the given points into the above formulas