What are the coordinates of point S"? ? The composition D
3 (x, WOD
10.
(x, y) is applied
0.
to ARST to create the image of AR"S"T", which is not
shown.
0
1위
Ty
141
2.
10.
151
12
OR
18
6
이
들이
2.
14.12-10-854-22
12
4
5
8 10 12
TIP
10
2
144

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.