\[2x - 4y + 3 = 0\]
\[2x + 3 = 4y;\ \ P( - 3; - 1):\]
\[2 \cdot ( - 3) + 3 = 4 \cdot ( - 1)\]
\[- 6 + 3 = - 4\]
\[- 3 \neq - 4\]
\[не\ принадлежит.\]