Question

Which methods could you use to calculate the x-coordinate of the midpoint of a horizontal line segment with endpoints at (0,0) and (20,0)

Check all that apply.

A. Count by hand.

B. Divide 20 by 2.

C. Divide 0 by 20.

D. Divide 20 by 0.

Answer 1

A. Count by hand.

B. Divide 20 by 2.

Explanation:

The midpoint between two points is found by the mean of their coordinates.

Endpoints at (0,0) and (20,0)

So we have x coordinates of 0 and 20. Their mean is:

`(20 - 0)/(2) = 10`

So we can find both counting by hand, or dividing 20 by 2.