Juliet and mercutio are moving at constant speeds in the xy-plane. they start moving at the same time. juliet starts at the point (0, −6) and heads in a straight line toward the point (10, 5), reaching it in 10 seconds. mercutio starts at (7, −16) and moves in a straight line. mercutio passes through the same point on the x-axis as juliet, but 2 seconds after she does. how long does it take mercutio to reach the y-axis?