How can we understand which region we have to shade? answer meas soon as possible.

Hi!
Here is the answer to your question.
 
 
 
∴In order to shade the region satisfying the inequality, choose a point (if possible (0, 0)), not lying on the line. Substitute its
coordinates in the inequality. If the inequality is satisfied, then shade the region of the plane which contain the chosen point
otherwise shade theregion of the plane which does not contain the chosen point.
 
Cheers! 

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what a question.where& do you want to shade? 

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What are you looking for?