9. Determine if point (3,5) is on the line r = (-1,3) + t(-2,1), t E R (3 marks) 10. Determine the intersection of lines : = (1, -4,3) + t(3,1, -1) and 12: 7 = (2,2, -1) + s(-1,3, -2) (4 marks) 1 1. A plane has x-intercept, y-intercept, and z-intercept, as 3, 2, 1, respectively. Determine the Cartesian equation of the plane. (4 marks)