Which system of equations is consistent and dependent?

A system is consistent and dependent when both equations describe the same line, so it has infinitely many solutions. In choice C, multiplying 3x + 2y = 3 by 2 gives 6x + 4y = 6, which is exactly the second equation. Therefore, the correct choice is C, the system with 3x + 2y = 3 and 6x + 4y = 6.

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