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Analytical Geometry

Cool goIITian

Joined:	22 Jul 2008
Post:	37

23 Feb 2009 12:38:25 IST

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Find distance of line 2x+y=3 from p(-1,-3) in direction of line whose slope is 1.

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Find distance of line 2x+y=3 from p(-1,-3) in direction of line whose slope is 1.

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kabi

Blazing goIITian

Joined: 11 Jan 2009

Posts: 575

23 Feb 2009 12:52:10 IST

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y=x+C can be consider to be that line

y=x-2

now point of intersection is (5/3,-1/3) now use distance formula to find the distance.

Thank u

Jai ho

10904him

Hot goIITian

Joined: 29 Dec 2006

Posts: 191

23 Feb 2009 12:55:14 IST

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Find a line parralel to this and passing given point.Find intersection of the two lines.Find dist b/w intersection and given point.

Vikram Saxena

Forum Expert

Joined: 1 Apr 2007

Posts: 3732

23 Feb 2009 15:40:39 IST

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equation of line is:

(y+3) / (x+1) = 1 {slope point formula}

y = x -2 and 2x+y = 3

x= 5/3 and y =-1/3

(5/3,-1/3) and (-1,-3) now find the distance between two points

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