Guys! HEEEELP!

TOPIC: Division of a line segment

Find the midpoint of the line segment joining
- (3/5, -3) and (4, -6/7)
- (2/3, 5/2) and (4/5, 3/4)

- A circle has its center at (3, -2) and one end of a diameter at (7,2). Find the other end of the diameter.

- Prove that the points (2, -3), (5,0), (2, 3) and (-1,0) are vertices of a square.

-Determine the distance of (3/2, 5) and (5/6, -3)

Thanks in advance guys!