1.(b).

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(2)C.

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To decide if the lines are coincident, we check to see whether a point on one of the lines satisfies the vector equation of the other. The point (0, - 1, 1) is on the first line. If it is also on the second line, then

They are coincident if the point (0, - 1, 1) on the second line satifies the equation of the first line.

x = - 4 - 2t y = - 3 - t z = 5 + 2t

0 = - 4 - 2t -1 = - 3 - t 1 = 5 + 2t

t = - 2 t = - 2 t = - 2

Since the same parametr value t = - 2 obtained each equation, the point (0, - 1, 1).