Question 204893
When graphing a linear inequality, how do you know if the inequality represents the area above the line?
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Check the x/y values of a point above the line in the inequality.
If you get a true statement the entire solution set is above the line.
If you get a false statement the entire solution set is below the line.
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What are the necessary and sufficient conditions for inequalities to represent an area in the first quadrant?
x>0 and y>0
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Cheers,
Stan H.