Question

a1x+b1y+c1=0
a2x+b2y+c2=0

find intersection of these two S.L.
formula is given in my book but i could not understand. so please help me...

x / ( b1c2 - b2c1 ) = y / ( c1a2 - c2a1 ) = 1 / ( a1b2 - a2b1 )

they found that by cross-multiplication. plz tell me how to find out it.... otherwise i know how to find out co-ordinates of point of intersection.

Answer 1

plz help me

Answer 2

rad plz help me

Answer 3

is it the determinant method ?

Answer 4

from here we can find x and y in general form.

Answer 5

actually, x = Dx/D
y = Dy/D

Answer 6

this is something like 4321 method my friend told me

Answer 7

can you give me some link where i can get info about from?

Answer 8

hmmm idk, try googling..

Answer 9

what keyword should i use

Answer 10

i am trying for long time

Answer 11

maybe, the solution of linear equation 2 variables by determinant method

Answer 12

thanks a lot if any info you get plz send me ....

Answer 13

actually if given 2 system linear 2 variables :