Question: What is the midpoint of the line segment joining the points (4, 5) and (10, 15)?

Options:

1. (7, 10)
2. (6, 10)
3. (8, 10)
4. (9, 10)

Correct Answer: (7, 10)

Solution:

Midpoint = ((4 + 10)/2, (5 + 15)/2) = (7, 10).