2. Let P = (2, 0, 1), 0 = (1, 0, 1), and R = (1, 1, 1). (a) [3 points] Find an equation for the plane through P, Q, and Ry PQ = ( 2,01) ( 1,0, 1) X a (2, 0, 1 ) * (0, 30 ) ( 0 , 0, 0 ) O 0 QR = 10 , 0 , 0 ) ( 1 , 1 , 1 ) i10 ) +;(3 ) - 1/0 ) It ( 0 0 0 ] 10, 3, 0 ) (b) [2 points] Find an equation for the plane through P perpendicular to the vector from Q to R