Find the equation of the plane containing the points P = (-3, 0, 2), Q = (-1, -1, 2), R = (-5, 3, 4). The result should be in the form ax + by + cz = d.

A parabola is the set of all points in the plane that are equidistant from a fixed point called the ______ and a fixed line called the _______ of the parabola.