If a straight line passing through the point $P ( - 3,4 )$ is such that its intercepted portion between the coordinate axes is bisected at $P$, then its equation is :\\
(1) $4 x + 3 y = 0$\\
(2) $4 x - 3 y + 24 = 0$\\
(3) $3 x - 4 y + 25 = 0$\\
(4) $x - y + 7 = 0$