SOLUTION: If there are two straight lines which are not parallel respectively {{{ax + by +c =0}}} and {{{px + qy + r =0}}}, Find the equation of straight line which goes through their in

Question 902595: If there are two straight lines which are not parallel respectively and ,
Find the equation of straight line which goes through their interception point and (0,0) point.
Me and other students use this formula and make and because the line which we want to find goes through the point (0,0). And then we get a value for .
We put that value to equation and take the equation of the straight line.
My teacher never taught us how this relationship come. She just told us to use it. I think she didn't know how to prove. Here's the formula.
=0
I want you to show me how this relationship come and a definition for .
Thank you...
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Why are you insulting your teacher?
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