Question 33069
The Midpoint Formula: 
The midpoint of a segment with endpoints (x1 , y1) and (x2 , y2) has coordinates is[ {{{(x1+x2)/2}}} ,{{{(y1+y2)/2}}}]
Here (x1,y1)= (2,-2)
(x2,y2)= (3,4)
therfore mid point of the line segment PQ is 
{(2+3)/2,(-2+4)/2}

(5/2,2/2)
(2.5,1) is the mid point