Family of Straight lines.

  Family of straight lines.          Equation of family of straight line passing through point of intersection of lines  $L_1\,:\,a_1x\,+b_1y\,+c_1\,=0$    and    $L_2\,:\,a_2x\,+b_2y\,+c_2\,=0$   is given by  $L\,:\,L_1\,+ \lambda L_2\,=0$  ,  where   $\lambda \in R$  ,  and  $\lambda$   is  a parameter as for every different  $\lambda$   we get different member of family.  … Continue reading Family of Straight lines.