Enter values of 'x' in the table. The table will automatically calculate the value of 'y' and plot the point.
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4
Once you've plotted enough points, sketch the graph. (HINT: Click the circle to the left to Show/Hide.)
5
Move the blue point to test if a region fulfills the inequality. The region that does will become shaded if the point enters it. (HINT: Click the circle to the left to Show/Hide.)
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