GA, L5S 104 6. Determine vector and parametric equations of a line through the points A(- 9, - 3, - 16) and B(6, 12, 14). [3] 7. Determine whether the following pairs of lines are parallel, coincident, skew or have a point of intersection. l: [x, y, z] = [4, 1, 2] + s[- 2, 1, 3] I,: [x, y, z] = [2, 0, - 1] + t[1, 4, 1] s, tER [4]