Line R is represented by the following equation: x y = 2

Mathematics
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Line R is represented by the following equation: x + y = 2 


Which equation completes the system that is satisfied by the solution (1, 1)?
Apr 30th, 2015

There are many such equations. For example, x - y = 0.

If it is not the answer you need, please tell me.

Apr 30th, 2015

2x + y = 2

 4x − 2y = 2

 2x − 2y = 2

 x + y = 4

I apologise I forgot to post the possible answers. Here are the choices.

Apr 30th, 2015

:))

The only variant which is satisfied by x=y=1 is the second (4x - 2y = 2). It is also not equivalent to x+y = 2, so completes the system.

Apr 30th, 2015

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Apr 30th, 2015
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Apr 30th, 2015
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