the coordinates of point S are given. the midpoing of RS is (6,-10). find the coordinates of point r. s(0,8)

Answer 1

If we let M be the midpoint,
S-M = (0,8) - (6,-10) = (-6,18)
that means that M-R must also be (-6,18), or R = M-(-6,18)

R = (6,-10) - (-6,18) = (12,-28)