SOLUTION: The midpoint of segment AB is M(9,7). One endpoint is A(3,9). Find the coordinates of endpoint B.

Algebra ->  Length-and-distance -> SOLUTION: The midpoint of segment AB is M(9,7). One endpoint is A(3,9). Find the coordinates of endpoint B.      Log On


   

Question 639677: The midpoint of segment AB is M(9,7). One endpoint is A(3,9). Find the coordinates of endpoint B.
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
First we draw AM



To get from A(3,9) to M(9,7), we came DOWN 2 units, then went
RIGHT 6 units, as indicated by the red lines:



Therefore to get from M to B, we will also have to come DOWN
2 units, then go RIGHT 6 units, like this:



and we end up at B which has the coordinates B(15,5)

Edwin