Select 6: < by pressing 6 or scrolling down and highlighting 6 and then pressing
ENTER. You should now have the following on your home screen:
Finally, press 0 and hit ENTER:
The 1 as output means the statement is true so that (-1, 2) is a solution to the inequality.
Therefore, we shade the side containing (-1, 2). The side containing (-1, 2) is below the
line. To shade below the line go back to the Y= menu:
Notice to the left of Y
1
, there is a solid line. Use the arrows to place the cursor on the
solid line as shown above. While the cursor is in this location press ENTER. You should
notice the line style changes to a thick line. Pressing ENTER a second time causes the
cursor here
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