Question 366995
please graph the inequality 
y < 2/3x
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Graph the boundary [y = (2/3)x] as a dashed line.
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Since you want y to be LESS than (2/3)x, shade
the half-plane BELOW the boundary line.
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{{{graph(400,300,-10,10,-10,10,y<(2/3)x)}}}
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Cheers,
Stan H.