Mathematics - 3D Coordinate Geometry Question with Solution | TestHub

If $P_1=0$ and $P_2=0$ are the equations of two planes, then the equation $P_1+\lambda P_2=0$ will represent the equation of family of planes passing through the line of intersection of planes $P_1=0$ and $P_2=0$ for different values of $\lambda$. The line of intersection of planes $x+2y+3z=0$ and $3x+2y+z=1$ is equally inclined with vectors