7.3b

1
7.3b Solving Quadratic Inequalities by Graphing

• Quadratic Inequality
• Solution to a Quadratic
• Inequality

2
Definition Quadratic Inequality An inequality
that has a parabola as a boundary line.
Definition Solution to a Quadratic Inequality
A region that makes the Quadratic Inequality true.
3
Solving Quadratic Inequalities by Graphing

• Steps
• Carefully graph the quadratic inequality as if it
• was an equation.
• 2. Carefully test a point in each region.
• 3. Shade the region where the inequality is true.

4
Example
5
Example
6
Your Turn!!
Start your assignment right now!! (Page 331 /
31, 33, 35, 37)
7

• When graphing an inequality, you shade the region
  where
• __________________________________________
  _
• There are ______ regions formed when you graph a
  quadratic inequality.