The midpoint of the segment joining points (a, b) and (j, k) is:

(j-a,k-b)
j-a over 2 k-b over 2
(j+a,k+b)
j+a over 2 k+b over 2

((j+a)/2, (k+b)/2 )

To find the midpoint of a segment joining two points (a, b) and (j, k), we can use the midpoint formula:

Midpoint = [(a + j)/2, (b + k)/2]

So, the correct answer is: the midpoint of the segment joining points (a, b) and (j, k) is ([(a + j)/2, (b + k)/2]).

The correct answer is:

The midpoint of the segment joining points (a, b) and (j, k) is given by the coordinates:

((a + j)/2, (b + k)/2)

So, the correct answer is (j+a)/2, (k+b)/2.