the midpoint formula is x1 + x2 divided by 2, y1 + y2 divided by two.

Question

if the coordinates are x1: a, y1:b and x2: c, y2: 0, what is the midpoint?
I have found the y coordinate of the midpoint to be b over 2. I found the x to be a-c over two. Is this correct? Can it be simplified more than that?

Answer 1

Why is xmid=(a-c)/2 ? why not (a+c)/2 ?

Answer 2

Ooops, that was a typo. It should be "+". Now, is that completely simplified?

Answer 3

yes.

Answer 4

thanks