SOLUTION: What must be true for a system of linear equations to have an infinite number solutions?

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Question 51372: What must be true for a system of linear equations to have an infinite number solutions?
Answer by rchill(405) About Me  (Show Source):
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The only way to have an infinite number of solutions is if the lines (equations) are exactly the same. Parallel lines will have no solution; two lines that intersect will have only one solution.