I have a problem on writing a polar equation as an equation in rectangular coordinates.

The problem is r^{2}tan θ = 1

In my attempts at the problem, I did:

r^{2}tanθ = 1

r^{2}(y/x) = 1

(x^{2}+y^{2})(y/x) = 1

After my last step, I'm not sure what to do next.