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Hi,

I was given this online assignment and this was one question I could not get.

I know that two parallel lines parallel if their normal vectors' are scalar multiples of each other. And that if solving for t and s with two equations gives a t and s not satisfying the third equation, they do not intercept and are thus skew.

I've spent about 4 hours on this now without any luck. From top to bottom, my answers are B, B, A, A, B, B. I know that there must be an intercept somewhere in there but I can't seem to find it even after repeating the questions over and over.

If anyone could help me out that would be great,

Thanks

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# Homework Help: Show that two lines(in 3D) are parallel, skew or intercept

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