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Is the following system consistent or inconsistent? y = 2x + 5 -2x + y = -2

Mathematics
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Is the following system consistent or inconsistent?

 

y = 2x + 5

-2x + y = -2 

Jan 20th, 2015

2x- y = -5

-2x+y = -2

-2x+y = 5 by multiplying first equation by -1

They are not consistent because in one case right hand side is -2 and in another -5

Jan 20th, 2015

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