Point A(7, 3) is translated to A' (16.-9). Which rule describes the translation?
(XV) - (x-9,-12)
(XJ) (-9.+12)
(x, y) → (x+9.y+12)
(4.1) (x+9,1-12)

B.the point lies directly on the regression

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.