Question: Determine whether and are parallel in each of the following cases. (a) = [3 -6 3]T; = [-1 2 -1]T (b)

Determine whether  and  are parallel in each of the following cases.
(a)  = [3 -6 3]T; = [-1 2 -1]T
(b)  = [2 0 -1]T; = [-8 0 4]T

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