\[y = |x + 2| + 2x\]
\[y = \left\{ \begin{matrix} 3x + 1,\ \ x \geq - 1 \\ x - 1,\ \ \ \ \ \ \ \ \ \ \ \ x < - 1 \\ \end{matrix} \right.\ \]
\[3x + 1 = y\]
\[x - 1 = y\]