3. A pair of lines in R3 are given. Determine whether they are parallel, intersecting or skew. If the lin intersect, find the point of intersection. a) r(t) = (2 + 4t, 6t, 4 – 2t) R(s) = (-2 + 2s,8 +2s, 2 + 6s) b) L ==- L2 == -6 z+2 3

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