P is (4, 9) and Q is (–2, 1); calculate the midpoint of PQ.

for the x coordinate; 4+(-2)=2 divide by two to find where midpoint between the two x coordinates 2/2=1for the y coordinate; 9+1= 10divide by 2 to find the midpoint between the two y coordinates 10/2=5therefore the answer is (1,5)