Answer: The midpoint is at (0, 2) and the length of the segment is 4 units.
Explanation: We see that AB = 4, so the length is obviously 4 units. And the midpoint is a point in the exact middle of both points. 4/2 = 2, so if we go 2 units away from any point (while still maintaining contact with the line), we get to the coordinate (0, 2)