(a) Find parametric equations for the line through (4, 5, 6) that is perpendicular to the plane xy + 3z = 2. (Use the parameter t. (x(t), y(t), z(t)) = (b) In what points does this line intersect the coordinate planes? (x(t), y(t), z(t)) = ( xy-plane yz-plane (x(t), y(t), z(t)) = ( xz-plane (x(t), y(t), z(t)) = ( |