Consider the implicit relation

$5x^{4}4y^3=-15xy3$

Find the following at $(x,y)=(-1,-2).$ Round your answers to at least $3$ significant figures.

$\frac{dy}{dx}=$

$\frac{d^{2}y}{d{x}^2}=$

$\frac{dx}{dy}=$

$\frac{d^{2}x}{d{y}^2}=$