1) Find the vector equation of the line intersection of the following two planes: 4x+3y-2z+7=0 and x-2y+5z-1=0
2) Determine whether the following system of equations has a single point of intersection. If so, find the point of intersection.
4x+y-9z=0
x+2y+3z=0
2x-3y-6=0