INEQUALITIES (2 VARIABLES) Graphing A Solution Set (Page 3 of 4)

Now we will graph the solution set for the inequality 2x^2-y > 3. First solve for y: y < 2x^2-3. Then obtain the boundary equation by replacing the inequality symbol with an equality: y = 2x^2-3. We will graph this boundary curve as function Y1, and use a graphing style to shade the solution set to the inequality.

 Y= key. CLEAR key.

 2 X,T,theta,n key. x-squared key. Minus key. 3
 2nd key. Left arrow key. Left arrow key. Left arrow key. ENTER key. (3 times)

 Calculator screen image.

We used the style shown because the solution set is all ordered pairs having a y-value below the boundary curve (you need to determine this yourself). Notice how the style icon is a lower shaded triangle.
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