1. Lesson 5.7 Predict with Linear Models The Zeros of a Function
Essential Question: How can you use a best-fitting line to make predictions about data? What are the zeros of a function?

2. Before we start…

3. What is a best-fitting line?
The line that most closely follows a trend in the data.
The process of finding the best-fitting line to model a set of data is called linear regression.

4. Why would you use linear regression?
By using linear regression, you find the best-fitting line of a set of data which allows you to make predictions.
You use a line of best fit to make a prediction about a value that is not in your data set.

5. How do you perform linear regression?
You will use technology to complete linear regression.
There are two methods:
Linear interpolation
You approximate a value between two known values.
Linear extrapolation
You approximate a value outside the range of known values.

6. What is a zero of a function?
A zero of a function is an x-value for which

8. How do you find a zero of a function?
Set the function equal to 0.
Solve the equation for x.

15. How can you use a best-fitting line to make predictions about data?
What are the zeros of a function?

16. Ticket Out the Door