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Which triple is NOT a set of direction ratios of the line with ratios 1, 2, 3?
A2, 4, 6
B-1, -2, -3
C3, 6, 9
D1, 2, 4
Answer & Solution
Correct answer: D. 1, 2, 4
1, 2, 4 is not a constant multiple of 1, 2, 3, while the others are multiples by 2, -1 and 3.
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