Question 1199571
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For the given RREF, the standard form of the system of linear equations is

    1x + 2y = 1,

    0x + 0y = 0.


The second equation is always valid for any values of x and y. 
Therefore, it does not carry any information and we can neglect it.


So, we have, actually, only one working equation

    x + 2y = 1.


It means that y can be any value, and x = 1 - 2y.


<U>ANSWER</U>.  y can be any value and x = 1-2y  is the general solution.
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Solved and explained.