. By analysing the normals, determine if the two planes intersect in a line, are parallel and distinct, or are coincident. n1:x+2y+3z-3=U 1:2:2xy+z7= [l By analysing the normals, determine if the three planes intersect in a point. 1:1: x 531+ 22 10 = [I 1:2: [x, y,z] = [0, D, 3] +s[2, El, 1] +t[7, 1,0] 13: 8x+ 5y+z 20 =0 Determine the point of intersection between the following pair of lines 7" = (5. 1, 7) + 5(2, 0. 5). 56R (1,1.3)+t(4, 2, 1),tR Determine the solution to the following system: xy+z=10 2x+3y22=21 1+2+1_1 2x5y4z_2