Suppose the coordinate of p is 2, pq = 8, and pr = 12. what are the possible coordinates of the midpoint of the given segment? the coordinates are pq, pr, and qr.. so confused on how to do this.. : )

Base in your question the coordinate is P is 2, PQ has a coordinate of 8 while PR has a coordinate of 12. To find the mid point of each segment you must first find the coordinate of QR which is from 8-12. So the answer will be 
PQ = 5, PR = 6, and QR= 10