please answer the question quickly

l. (a) Show that the following system of equations has an innite number of solutions. 2x y + 22 = l x + y 22 = 2 :r 2}: + 42 = l The system of equations represents three planes in space. [3 marks] (b) Find parametric equations for the line of intersection, L, of the three planes. [3 marks] 2 l 2. Consider the line L with vector equation F = 1 +41 2 . Find the coordinates of the 3 1 point on L that is nearest to the origin. [5 marks|