Question: 1. Which of the points A = (1.3, -2.7, 0), B = (0.9, 0, 3.2), C = (2.5, 0.1, -0.3) is closest to the yzplane? Which one lies on the xz-plane? Which one is farthest from the xy -plane?
2. What is the midpoint of the line segment joining the points (-1, 3, 9) and (5, 6, -3)?