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abhishek_mumbai · 2009 May 23rd, 07:33 PM

equation is y = mx + b
and slope is m

if rotated by 90 degree, slope will be -1/m

if rotated by 180 degree , slope will be same. i.e. m

if parallel lines, slope is m.

2009 May 23rd, 07:33 PM	#12 (permalink)
abhishek_mumbai Done with GMAT - 700 Join Date: Apr 2009 Location: Pune, India Posts: 1,182	equation is y = mx + b and slope is m if rotated by 90 degree, slope will be -1/m if rotated by 180 degree , slope will be same. i.e. m if parallel lines, slope is m.