Question 92997
/ X - 3Y/> or = 9 
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This means (x-3y)>=9 or x-3y<=-9
Then:
3y<=x-9...............or 3y>=x+9

y <= (1/3)x-3.........or y>=(1/3)x+3
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{{{graph(400,300,-10,10,-10,10,(1/3)x-3,(1/3)x+3)}}}
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This is the graph of the EQUALITIES.
Cheers,
Stan H.