$$x = t ^ { 2 } y = t ^ { 3 }$$
$x=yt^{2}\text{ and }yt^{2}=t^{3}$
$\left\{\begin{matrix}x=y^{3}\text{, }&t=y\\x=0\text{, }&t=0\end{matrix}\right.$
$\left\{\begin{matrix}y=t\text{, }&x=t^{3}\text{ and }t\neq 0\\y\in \mathrm{R}\text{, }&x=0\text{ and }t=0\end{matrix}\right.$