You can put this solution on YOUR website! are the graphs of the two lines
2x-3y=6
y = (2/3)x -2
-------------------------
2x+3y=9
y = (-2/3)x+3
---------------------------
parallel: No because the slopes are not the same.
---------
perpendicular: No because (2/3)(-2/3) is not -1
---------
neither: Yes
====================
Cheers,
Stan H.
(