To find the midpoint of line segment AB, you would need to calculate the average of the x-coordinates and the average of the y-coordinates of points A and B. In this case, if you're adding the x-coordinates (let's say 6 and 2) and then dividing by 2, you are finding the average of the x-values of points A and B.
Therefore, the correct response to the question would be:
It finds the average distance between the two x-values of points A and B.