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College Algebra  /  Alg 490  ·  Atom · ~20 seconds

Independent, Dependent, Inconsistent

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A system of two lines is independent with one solution, dependent with infinitely many, or inconsistent with none — the lines parallel.

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x + y = 3 against x + y = 5 collapses to 3 = 5: parallel, no solution. Doubled, 2x + 2y = 6 is the same line.

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