A segment has endpoints at (2, -15) and (8, 4). What is the y-coordinate of the midpoint of that segment? Enter your answer as a decimal.

Question

e.mccormick · Answer

The midpoint is half the distance.  So, you need to look at how much the x and y values are changing, and only change half as much.

e.mccormick · Answer

Another way of doing this is with what they call the midpoint formula.  In $(x,y)$  it makes the point:

$\left (\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right )$

anonymous · Answer

(5, -11) ???

e.mccormick · Answer

The x is 5, but the y is not -11.  you forgot to divide that by 2.

e.mccormick · Answer

And since it is asking for the y value, that is the one you must get right.