Quadratic Simultaneous Equations by Boxed Rockets

\begin{matrix} y = x^{2} - 13 x - 3 \\ y = 3 x - 7 \end{matrix}

\begin{matrix} x = 15.7 or 0.254 \\ y = 40.1 or -6.238 \end{matrix}

\begin{matrix} y = 3 x^{2} + 8 x - 4 \\ y = x + 8 \end{matrix}

\begin{matrix} x = 1.15 or -3.48 \\ y = 9.15 or 4.52 \end{matrix}

\begin{matrix} y = 2 x^{2} - 8 x - 7 \\ y = x + 6 \end{matrix}

\begin{matrix} x = 5.65 or -1.15 \\ y = 11.65 or 4.85 \end{matrix}

\begin{matrix} y = x^{2} - 14 x - 5 \\ y = x + 9 \end{matrix}

\begin{matrix} x = 15.9 or -0.882 \\ y = 24.9 or 8.118 \end{matrix}

\begin{matrix} y = 3 x^{2} - 4 x + 9 \\ y = 2 x + 6 \end{matrix}

\begin{matrix} x = 1 \\ y = 8 \end{matrix}

\begin{matrix} y = 3 x^{2} + 13 x + 4 \\ y = 2 x + 10 \end{matrix}

\begin{matrix} x = 0.482 or -4.15 \\ y = 10.964 or 1.7 \end{matrix}