Question 1125532
The lines y=2x and 2y= -x are.....? 
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{{{y=2x}}}

and  {{{2y=-x}}}
{{{y=-x/2}}}
{{{y=-(1/2)x}}}


and their slope are, ?



{{{system(y=highlight_green(2)x,and,y=highlight_green(-(1/2))x)}}}


{{{2(-1/2)=-1}}}-------this should mean something to you.