SOLUTION: M(-7, 6) is the midpoint of line RS. If S has coordinates (0, 9), find the coordinates of R.

Algebra ->  Length-and-distance -> SOLUTION: M(-7, 6) is the midpoint of line RS. If S has coordinates (0, 9), find the coordinates of R.      Log On


   

Question 602437: M(-7, 6) is the midpoint of line RS. If S has coordinates (0, 9), find the coordinates of R.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,



M(-7, 6) is the midpoint of line RS. If S has coordinates (0, 9), 



Midpoint Pt(x,y):  ( %28x%5B1%5D+%2B+x%5B2%5D%29%2F2, %28y%5B1%5D+%2B+y%5B2%5D%29%2F2++%29)

 %280+%2B+x%5B2%5D%29%2F2+=+-7           therefore x%5B2%5D = -14 

%289+%2B+y%5B2%5D%29%2F2++%29 = 6          therefore y%5B2%5D = 3 



coordinates of R are(-14,3)