12. a. Given the line 3" = (3, l, 5) + 3(2, 1, 0), 56R, and the plane x 2y + z + 4 = 0, verify that the line lies on the plane. b. Determine the point of intersection between the line 7" = (7, 5, l) + t(4, 3, 2), ER, and the line given in part a. c. Show that the point of intersection of the lines is a point on the plane given in part a. d. Determine the Cartesian equation of the plane that contains the line 3' = (7, 5, l) + 3(4, 3, 2), tell and is perpendicular to the plane given in part a