In: Math
-a) Find the equation of the line in its vector, parametric and symmetrical shapes that passes through the point.
P (5, -2, 4) and it's perpendicular to the plane 4x-3y+5z=0.
b) Find the equation of the plane (Cartesian and vector) that passes through the points. A (1, -1, -1), B (3, 5, 7), C (1, 6, 8).