Question 370281
{{{x-2y=-4}}}
{{{2y=x+4}}}
{{{y=(1/2)x+2}}}
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{{{drawing(300,300,-2,10,-2,10,grid(1),graph(300,300,-2,10,-2,10,0,(1/2)x+2))}}}
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{{{x+2y=8}}}
{{{2y=-x+8}}}}
{{{y=-(1/2)x+4}}}
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{{{drawing(300,300,-2,10,-2,10,grid(1),circle(2,3,0.2),graph(300,300,-2,10,-2,10,0,(1/2)x+2,-(1/2)x+4))}}}
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