\textbf{131.} Consider line $\Delta$ with equation $3x + 2y = 6$. Under rotation about the origin by $\dfrac{\pi}{2}$, in the direction of line $\Delta'$, the equation of line $\Delta'$ under the translation $T(x,y) = (x-3, y+1)$ is:
\medskip
(1) $3y - 2x = 12$ \hfill (2) $3y - 2x = 15$ \hfill (3) $2y - 3x = 8$ \hfill (4) $2y + 2x = 9$
\medskip