Find the coordinates of the other endpoint of the​ segment, given its midpoint and one endpoint.​ midpoint ​(5​,9​), endpoint ​(9​,3​)

Question

Find the coordinates of the other endpoint of the​ segment, given its midpoint and one endpoint.​ midpoint ​(5​,9​), endpoint ​(9​,3​)

Answer 1

(9+x)/2 = 5

9+x = 10

x = 1

(3+y)/2 = 9

3+y = 18

y = 15

(1,15)