Do you mean xy instead of sy if so i’m pretty sure you would just multiply both of the numbers
Answer:

Step-by-step explanation:
Let
x------> the number of pink roses bushes
y----> the number of white rose bushes
we know that

-----> equation A

substitute the value of x in the equation A

(X,Y) 0=X and 0=Y if you plug in 0 for X and 0 for Y in Y=8X it will be 0=8(0). 8 times 0 is 0 which is the equation
The answer is 360 hope it helps