## seashell 3 years ago 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

1. seashell

please teach me step by step

2. princeofwetlot

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

3. princeofwetlot

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

4. princeofwetlot

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

5. seashell

-2

6. princeofwetlot

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

7. seashell

3

8. princeofwetlot

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

9. seashell

ohhhhhhh

10. seashell

:D yes!

11. princeofwetlot

so i assume you can do the rest?

12. seashell

then i do the same for y?

13. princeofwetlot

yes

14. seashell

thanks!!!!

15. princeofwetlot

you're welcome