If a pair of linear equations in two variables is consistence then its solutions set is not a dash set
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In other words both the lines are parallel to each other. Therefore, the pair of equations has no solution. ... If two lines are coincident then, they have infinite solution and pair of linear equations is consistent; If two lines are intersecting then, they have unique solution and pair of linear equations is consistent.
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the atmosphere is consist of biosphere lithosphere.
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