Question 881653
First graph {{{y=2x+3}}}
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{{{graph(300,300,-10,10,-10,10,2x+3)}}}
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Now choose a point not on the line and test the inequality.
(0,0) is convenient.
{{{y>=2x+3}}}
{{{0>=2(0)+3}}}
{{{0>=3}}}
False, so shade the area not containing (0,0).
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{{{graph(300,300,-10,10,-10,10,y>=2x+3)}}}