suppose Q was the midpoint of PR. Use the information to find its missing value
• PQ equals 3X +14 and QR equals 7X -10; find X
• PQ equals 2X +1 and QR equals 5X -44; find PQ
• PQ equals 6X +25 and QR equals 16 minus 3X; find PR
• PR equals 6X +31 and QR equals 483; find X