Which methods could you use to calculate the y-coordinate of the midpoint of a vertical line segment with endpoints at (0, 0) and (0, -12)?

check all that !

a. add the endpoints.
b. count by hand.
c. divide 12 by 2.
d. divide –12 by 2.

You could clearly count it by hand, although that wouldn't be the most efficient way. Since everything else is 0, dividing -12 by 0 would work to get -6, but since it's negative 12/2 would not work. You need to find the midpoint, not add the endpoints, which is why A doesn't work

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