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Question

Find the consistent pair of linear equations from the following.

A
x+2y=42x+4y=8
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B
2x+y=43x2y=8
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C
2x+3y=42x+3y=8
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D
4x+6y=42x+3y=8
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Solution

The correct option is B 2x+y=43x2y=8
For consistent pair of lines, a1a2b1b2.

From the given options.
For x+2y=4 &2x+4y=8
12=24=12 Its not a consistent pair of linear equations.

For 2x+y=4 &3x2y=8
2312 Its a consistent pair of linear equations.

For 2x+3y=4 &2x+3y=8
22=33=1Its not a consistent pair of linear equations.

For 4x+6y=42x+3y=8
42=63=2Its not a consistent pair of linear equations.

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