Question

M(-3,-1) is the midpoint of RS. If S has coordinates (4,6) what are the coordinates of R?

Answer 1

let the coordinat of R (x,y)

Answer 2

1/2(x+4) = -3
solve for x

Answer 3

also,
1/2(y+6) = -1
solve for y

Answer 4

then rewrite (x,y) as the coordinat for R