Question 91749
Solving an inconsistent system 
2x-y=4
2x-y=6 
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Let's see what inconsistent means.
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Assuming that the x  and the y variables mean the
same in the two equation you can subtract one from
the other and get 0 = 2
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But that is false
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It happened because you assumed 2x in each equation
could be replaced by some number and y in each equation
could be replaced by some number.
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Obviously that assumption is wrong.
That is why the system is called inconsistent.
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There is no solution to the system of equations.
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If you graphed the two equations you would get
two parallel line.  There is no point that is on
both lines.
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Cheers,
Stan H.