By analysing the normals, determine if the three planes intersect in a point. 11:1: x- 5y+ 22-10 = 0 11:2: [x, y, z] = [0, D, 3] + s[2, D, l] +[7, 1, 0] 113: 8x+5y+z20 = 0 The answer is: The 3 planes do not intersect at a point. And I'd like to know the solutions to the