Convert to polar form y=3x^2

r = 2 / (sinθ - 3 cosθ)

Explanation: y = r sin θ

x = r cos θ Then: r sin θ = 3r cos θ + 2 and r sin θ - 3r cos θ = 2 thus r (sin θ - 3 cos θ) = 2

⇒r = 2 / (sin θ - 3 cos θ)