Solving Quadratic Inequalities by Graphing
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Use Solid line for

or

Use Dashed Line for
 or 
TO Graph:
1) Graph the quadratic
2) Draw using solid or dashed line
3) Shade either the inside or the outside of the parabola (use a test point)
Examples:
1)
3)
2)
4)
5)
6)
Determine whether the ordered pair is a solution of the inequality.
Show your work then answer yes or no.
7.
y < x2 – 2x + 4; (1,2)
8. y > 2x2 + x – 5; (– 2, 1)
9. y ≤ – 2x2 +5x +6; (4, – 4)
Match the inequality with its graph.
10. y ≥ – x2 +4x – 3
11. y ≤ – x2 – 4x – 3
12. y ≤ x2 +2x – 3
13. y < x2 – 4x + 3
14. y > – x2 +4x – 3
15. y > x2 – 2x – 3
17. y ≤ –x2 + 6x – 7
18. y > 2x2 – 4x – 6
Graph each quadratic inequality.
16. y ≤ x2 – 6x + 8