Question

The endpoints of a line segment are at the coordinates (4, –2, 5) and (6, 4, –3). What is the midpoint of the segment?

Answer 1

add up the x coordinates of the lines and divide them by 2. Do that for y and z as well so:
(4+6/2,-2+4/2,5+-3/2)
(5,1,1) is the midpoint