19. M(8, 7) is the midpoint of . The coordinates of S are (9, 5). What are the coordinates of R? (8.5, 6) (7, 9) (16, 14) (10, 3)

1 answer

Let the coordinates of R be (x, y). Since M is the midpoint of RS, we can use the midpoint formula to find the coordinates of R:

x = (8 + 9) / 2 = 8.5
y = (7 + 5) / 2 = 6

Therefore, the coordinates of R are (8.5, 6), so the correct answer is (8.5, 6).