Tristan and Iseult are traveling in the xy-plane. They travel with constant speeds and directions along lines. They both start at midnight. Tristan start at the point (10,3) and at 2 AM, Tristan's location is (7,8). Iseult starts at the point (5,4) and reaches the point (11,6) at 3 AM.

(a) Find the parametric equations for Tristan's motion. 10-3/2t, -3+11/2t

(b) Find the parametric equations for Iseult's motion. 5+6/3t, 4+2/3t

(c) When will Tristan and Iseult be closest together? Give your answer in hours after midnight.