### Parametric equation of line equation and equation of plane

See attached for full description. For the points P(1, 2, 1), Q(-2, 3, 1), and R(3, 0, -3): 1) Find the parametric equation for the line segment PQ. 2) Find the equation of the plane through P, Q, and R 3) Find the parametric equation for the line R normal to this plane.