(1, -1.5).
Explanation:
The midpoint of a segment with endpoints (x1, y1) and (x2, y2) is given by the following formula:
((x1 + x2)/2, (y1 + y2)/2)
So, for the given endpoints (4,0) and (-2,-3), the midpoint is:
((4 + (-2))/2, (0 + (-3))/2) = (1, -1.5)
The midpoint of the segment is (1, -1.5).