In this lesson, you will explore how a linear model is used to describe the relationship between two numerical variables and how to use a line of best fit to make predictions.

When you finish this lesson, you will be able to:

• Describe the rate of change and $y$-intercept for a linear model in everyday language.
• Draw a linear model that fits the data well and use the linear model to estimate values.

Here are the activities that will help you reach those goals:

• 3.1.1: Exploring Scatter Plots
• 3.1.2: Creating a Scatter Plot Using Data
  • 3.1.2: Self Check
  • 3.1.2: Additional Resources
• 3.1.3: Interpreting the Slope and Vertical Intercept of a Linear Model
  • 3.1.3: Self Check
  • 3.1.3: Additional Resources
• 3.1.4: Interpreting the Slope and Vertical Intercept of a Scatter Plot
  • 3.1.4: Self Check
  • 3.1.4: Additional Resources
• 3.1.5: Using an Equation for a Fit Line

After that, you’ll practice and review.

• 3.1.6: Practice
• 3.1.7: Summary