Lesson 8

Lesson 8: Solving Quadratic Equations Using the Quadratic Formula

 

Focus

 

When this snowboarder takes to the air, she is not thinking about how her jump could be described by quadratic functions. She is trying to maximize her air time so she can grab the board, a neat trick. To improve her jump, an analysis using quadratic functions might be useful. She could see that her vertical liftoff speed is the determining factor in how long she remains aloft.

 

In this lesson you will use formulas to find the roots of quadratic functions and analyze parabolic paths.

 

Lesson Questions

 

This lesson will help you answer the following inquiry questions:

• How can you solve a quadratic equation without using factoring or graphing?

• How can you use the discriminant to find the number of roots a quadratic function will have?

• How do you solve problems using the quadratic formula?

Assessment

• Share 1
• Lesson 8 Assignment

All assessment items you encounter need to be placed in your course folder.

 

Save a copy of the Lesson 8 Assignment to your course folder. You will receive more information about how to complete the assignment later in this lesson.