1. Find the equation of the plane containing the line (x,y,z)=(5+4t, -5-3t,2) and perpendicular to the line (x,y,z)=(2-3t,3-4t,5+7t). 2. Relevant equations Cross product? Dot product? Ax+By+Cz=D? 3. The attempt at a solution I'm really new with this material and any aid would be greatly appreciated. The only thing I can think of to do would be the cross product of (4,-3,0) and (-3, -4, 7).