Determine whether the lines L1 and L2 are parallel, skew, or intersecting. L1: x = 5 − 3t, y = 3 + 6t, z = 6 − 9t L2: x = 3 + 2s, y = −4s, z = 6 + 6s parallel skew intersecting If they intersect, find the point of intersection. (If an answer does not exist, enter DNE.) (x, y, z) =