Find the coordinates of the other endpoint when you are given the midpoint and one of the endpoints. Answer in terms of a decimal rounded to the nearest tenth or an improper fraction in simplest form.

P1 M P2
(3, 5) (-2, 0) ( , )

Question

Find the coordinates of the other endpoint when you are given the midpoint and one of the endpoints. Answer in terms of a decimal rounded to the nearest tenth or an improper fraction in simplest form.

P1	         M	                  P2
(3, 5)	(-2, 0)	(      ,      )

anonymous · Answer

i know i think its -5 , -7 butt show me howwww

anonymous · Answer

let (x1, y1) be P2.  so you'll need to solve these for the coordinates:

-2 = (3+x1)/2
0 = (5+y1)/2

in each, solve for the variable to get x1, y1 and that'll be the coordinates of P2

anonymous · Answer

thanks so much!