Determine if the following two lines intersect. If they intersect, find the point of intersection. If they do not intersect, identify whether they are parallel, coincident or skew lines.

L1:

x = 1 + 2t

y = -1 - t

z = 3t

L2:

x = 1 + 3s

y = 2 + 2s

z = 3 + 4s

Im not sure how to start this question. I can manipulate the formulas just unsure of where to begin.

Thanks.