\[\left( \frac{1}{2}x + 2 \right)(y - 4) = 0\]
\[\frac{1}{2}x + 2 = 0;\ \ \ \ \ \ y - 4 = 0\]
\[\frac{1}{2}x = - 2;\ \ \ \ \ \ \ \ \ \ \ y = 4\]
\[x = - 4;\ \ \ \ \ \ \ \ \ \ \ \ \ \ \]
\[Две\ пересекающиеся\ прямые:\]
\[x = - 4;\ \ y = 4.\]