Decide If the System of Equations in Two Variables Is $$\left\{ \begin{array} { l } x ^ { 3 } + 2 x = y \\x + 7 y = 4\end{array} \right.$$

Multiple Choice

Decide if the system of equations in two variables is linear or nonlinear.
- $$\left\{ \begin{array} { l } x ^ { 3 } + 2 x = y \\x + 7 y = 4\end{array} \right.$$

A) Nonlinear
B) Linear