Question

Segment RS has endpoint R(5,7) and midpoint M(9,1). What are the coordinates of S?

Answer 1

(13,-5)

Explanation:

let the coordinates of S be (x,y)

so, we have

(9,1) = (5+x/2, 7+y/2)

so, 9 = (5 + x) /2 1 = (7+ y)/2

9*2 = 5 + x 2= 7 + y

18 -5 =x 2-7 = y

13 =x -5 = y