Determine whether the lines L₁ and L₂ are parallel, skew, or intersecting.
L₁: x = 3 - 6t, y = 1 + 9t, z = 9 – 3t
L₂: x = 1 + 4s, y = −6s, z = 9 + 2s
a. parallel
b. skew
c. intersecting
If they intersect, find the point of intersection. (If an answer does not exist, enter DNE.) (X, Y, Z) =