$$\left. \begin{array} { l } { a x + b y + c _ { 2 } = 0 } x + b _ { 2 } = 0 } \\ { \frac { 3 } { b } x \frac { a _ { 1 } } { b _ { 2 } } = - 1. \text { T h e t h e \right.$$
$\left\{\begin{matrix}x=-\frac{by+c_{2}}{a}\text{, }&a\neq 0\\x\in \mathrm{C}\text{, }&c_{2}=-by\text{ and }a=0\end{matrix}\right.$
$\left\{\begin{matrix}x=-\frac{by+c_{2}}{a}\text{, }&a\neq 0\\x\in \mathrm{R}\text{, }&c_{2}=-by\text{ and }a=0\end{matrix}\right.$
