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finsisher · 2009 May 22nd, 08:02 PM

D it is, for 2 lines to be perpendicular product of their slopes = -1 or m1*m2=-1 where m1 is slope of 1st line and m2 is slope of second line.
general form of equation is y = mx + C

2009 May 22nd, 08:02 PM	#4 (permalink)
finsisher TestMagic Guru Join Date: Feb 2007 Posts: 1,845	D it is, for 2 lines to be perpendicular product of their slopes = -1 or m1*m2=-1 where m1 is slope of 1st line and m2 is slope of second line. general form of equation is y = mx + C