Question

Please help me with this, it has to do with integrated rate laws. I have no idea how to do it.

Answer 1

I don't expect to get the answer, I just want to understand it.

Answer 2

zero order reactions proceed at a constant rate (i.e. slope), first and second proceed at exponential rates.
Look at your products and your reactants, [X] should decrease over time while [Y] should increase because the forward reaction is being studied (arrow X -> Y).

Answer 3

omg! thank you so much! hhahah it did not male sense, but now I understand it. thanks!