Find the coordinates of the midpoint of line segment AB for A(-3, 6) and B(1, 7).
A. (-2, 13)
B. negative 1, thirteen-halves
C. 5, thirteen-halves
D. 5, one-half

Question

Find the coordinates of the midpoint of line segment AB for A(-3, 6) and B(1, 7).
	A.	(-2, 13)
	B.	negative 1, thirteen-halves
	C.	5, thirteen-halves
	D.	5, one-half

mathmale · Answer

Have you used the "midpoint formula" before?  If not, would you mind looking it up?

anonymous · Answer

Yes I know it.

mathmale · Answer

Great.  Look at your x coordinates (from both points).  they are -3 and 1.  Please ADD those together and divide the result by 2.  What do you get?

anonymous · Answer

-1?

mathmale · Answer

Beautiful.  That, Mary, is the x-coordinate of your midpoint.  

Now do the same thing with the y-coordinates given you.

Add 6 and 7 and divide the result by 2.

What is the significance of the result?

anonymous · Answer

13 over 2?
 because it wouldn't come out even?