Practice package. I'm stuck on these questions from the package. please give by 8pm and show all work.

a) Consider the plane with a scalar equation 4x - 2y + z - 19 = 0. Find the point of intersection of this plane with the line passing through the points A(1, -6, -5) and B(3, -3, -3). [3 marks] b) Where does the line with the vector equation [x, y, z] = [6, 7, -8] + t[-2, 4, 1] intersect the xy-plane? [2 marks]