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) ( , )
helpppp

Answer 1

please teach me step by step

Answer 2

midpoint of x = \(\Large \frac{x_1 + x_2}{2}\)

Answer 3

midpoint of y = \(\Large \frac{y_1 + y_2}{2}\)

Answer 4

okay...midpoint of x means x coordinate of the midpoint...what is the x coordinate of your midpoint?

Answer 5

-2

Answer 6

now...what is the x coordinate of one of the endpoints?

Answer 7

3

Answer 8

so... \[\large -2 = \frac{3 + x_2}{2}\] got that? i just substituted

Answer 9

ohhhhhhh

Answer 10

:D yes!

Answer 11

so i assume you can do the rest?

Answer 12

then i do the same for y?

Answer 13

yes

Answer 14

thanks!!!!

Answer 15

you're welcome