Question

The midpoint of SM is (5,−11). One endpoint is S(3,5). What are the coordinates of endpoint M?

Answer 1

let the coordinates of point M are (x,y)

5= 3+X /2

3+X = 10

X= 7

-11= 5+y /2

5+y = -22

y = -27

point M = (X,y) = (7,-27)