Question 905025
There is only 1 variable, so you
would plot it on the x-axis.
{{{ abs( 2*2 - 1 ) = 3 }}}
{{{ abs( 2*(-1) - 1 ) = 3 }}}
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From this, I see that 
{{{ x < -1 }}} and
{{{ x > 2 }}}
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You can plot this on the x-axis
{{{ y }}} does not exist in the plot