Let P (1, 2, 3), Q (2, 3, 1), and R (3, 1, 2).

(a) Derive the parametric equations for the line that passes through P and Q without resorting

to the known formula.

(b) Derive the equation of the plane that passes through the points P, Q, and R without

resorting to the known formula.

(c) Find the area of the triangle with vertices P, Q, and R.

brinlin Aug 13, 2021