You are right. Transitivity means, that:
if a = b and b = c, then a = c
(here a = x, b=5 and c = y).
3 3/8 = 27/8
So (27/8)/(9/1)
(27)(1)/ (8)(9)
The answer is 27/72 or 3/8
B a counterclockwise rotation about the origin of 90°
under a counterclockwise rotation about the origin
a point ( x , y ) → (- y, x)
figure Q to figure Q'
( 4,2 ) → (- 2, 4 )
(7, 5 ) → (- 5, 7 )
(3, 7 ) → (- 7 , 3 )
(2, 4 ) → (- 4, 2 )
(5, 4 ) → (- 4, 5 )
the coordinates of the original points of the vertices of Q map to the corresponding points on the image Q'