Midpoint of segment

Question

P (-6,-9) Q(9 0) Find the points P and Q, find the coordinates of the midpoint of the segment PQ.

Answer 1

midpoint formula says:

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

where (x1,y1) and (x2,y2) are the endpoitns

(-6+9)/2 , (-9+0)/2

(3/2, -9/2) is IN FACT the midpoint