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Question

Which of the following pairs of linear equations is inconsistent?
1. x+3y5=0, 2x+y=0
2. 2x+y=1, 2y=24x
3. 2xy=2, 2y4x=2


A
All of the above.
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B

x+3y5=0, 2x+y=0

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C

2xy=2, 2y4x=2

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D

2x+y=1, 2y=24x

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Solution

The correct option is C

2xy=2, 2y4x=2


1. x+3y5=0,2x+y=0

1231, The pair of linear equations is consistent.

2. 2x+y=1,2y=24x

24=12=12, The pair of linear equations is consistent.

3. 2xy=2,2y4x=2

24=1222, The pair of linear equations is inconsistent.


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