$$\left. \begin{array} { l } { x = 2 t ^ { 2 } + 17 t - 1 , y = 3 t ^ { 4 } - 8 t ^ { 2 } + 9 } \end{array} \right.$$
$x=2t^{2}+17t-1$
$y=3t^{4}-8t^{2}+9$
