Sum of the possible values of `lamda` for which the following threes line
`x+y=1,lamdax+2y=3,lamda^(2)x+4y+9=0` are concurrent is

The values of lamda for which the line y=x+ lamda touches the ellipse 9x^(2)+16y^(2)=144 , are

The values of lamda for which the line y=x+ lamda touches the ellipse 9x^(2)+16y^(2)=144 , are

The values of lamda for which the line y=x+ lamda touches the ellipse 9x^(2)+16y^(2)=144 , are

The values of lamda for which the line y=x+ lamda touches the ellipse 9x^(2)+16y^(2)=144 , are

The value of lamda for which the straight line (x -lamda)/(3) = (y -1)/(2 + lamda) = (z-3)/(-1) may lie on the plane x - 2y = 0 is

The values of lamda for which the system of equations x+y-3=0, (1+ lamda)x+(2+lamda)y-8=0, x-(1+lamda)y+(2+lamda)=0 is consistent are