Lesson 3
1. Lesson 3
1.4. Discover
Module 4: Polynomials
Discover
Read “Investigate the Math,” up to question A, on page 307 of your textbook.
Try This 1
Use the Ball Bouncing Tool applet to create a curve of best fit. Drag the blue points so that the resulting curve matches the trend of the data.
Use the coordinates of the blue points to determine the equation of your curve. 
- What type of function is your curve of best fit?
- How can the curve of best fit be used to determine how long the ball is in the air?
Save your responses in your course folder.
Share 1
With a partner or in a group, come to agreement on the answers to the Try This 1 questions. Then discuss the following: Why is linear regression inappropriate for this problem?
If required, save a record of your discussion in your course folder.
You may find it helpful to position one of the blue points at the vertex, and then use the coordinates of that point and one of the others to determine the equation. The process will be similar to the one used to solve Are You Ready? question 4.