Asked by Zach Bringer

Points $P$ and $R$ are located at (2, 1) and (12, 15) respectively. Point $M$ is the midpoint of segment $\overline{PR}$. Segment $\overline{PR}$ is reflected over the $x$-axis. What is the sum of the coordinates of the image of point $M$ (the midpoint of the reflected segment)?
Answered by oobleck
just use what you know. This is not hard.
M = ((2+12)/2 , (1+15)/2) = (7,8)
When PR is reflected, so is M.
(x,y) -> (x,-y)
So now you can easily find the image M', and thus the answer.
Answered by Zach Bringer
so its 15?
Answered by oobleck
NO
Try reading everything I wrote, especially

(x,y) -> (x,-y)

OK??

Or, what the heck - draw the line and its reflection.
Answered by I need help
What do you mean?
Answered by I need help
is it -1?
Answered by oobleck
that's better.
Answered by ur mom
is it 14?
Answered by Random person
Its -1
Answered by answer!
its -1 because you do 7-8.
Answered by Butterfly knife
its 69420 309
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