Are the vectors (1,2,3)(1,2,3)(1,2,3), (4,5,6)(4,5,6)(4,5,6), (7,8,9)(7,8,9)(7,8,9) linearly independent?
No — they are linearly dependent
Yes — they span R3\mathbb{R}^3R3
Yes — no vector is a scalar multiple of another
Cannot be determined without row reduction