Analytical Geometry - XP Math - Forums

 XP Math - Forums Analytical Geometry

 08-08-2007 #1 suganya Guest   Posts: n/a Analytical Geometry Hi, How to find the length of the perpendicular from (3,2) on the line 3x+2y+1=0. Pls help! Regards, Suganya
 08-09-2007 #2 Sillysidley Last Achievements   Join Date: Oct 2006 Posts: 822 Write the line in slope intercept form: $y=\frac{-3x}{2}-\frac{-1}{2}$ Since slopes of perpendicular lines are negative reciprocals, the perpendicular line is in the form $y=\frac{2x}{3}+b$ Substituting (3,2) in, we find $b=0$, so the line is $y=\frac{2x}{3}$ __________________ . Last edited by Sillysidley; 08-09-2007 at 06:46 PM..
 08-25-2007 #3 pianoforte Guest   Posts: n/a ROLF, analytical gets beeped out Last edited by Mr. Hui; 08-27-2007 at 01:33 PM..

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