The st. lines `3x + 4y =5 and 4x-3y = 15` interrect at a point `A(3,-1)`. On these linepoints B and C are chosen so that `AB = AC`. Find the possible eqns of the line BC pathrough the point `(1, 2)`

Answer

`x-7y+13=0` and `7x+y-9=0`