In this lesson, you learned how to:

• Set up and solve direct variation problems.

Here are the activities that helped you reach those goals:

• 1.15.1: Solving Proportions 
  • In this activity, you recalled how to solve proportions for variables.
• 1.15.2: Modeling Equations Using Direct Variation
  • In this activity, you found the constant of variation given a situation and wrote a direct variation equation.
  • 1.15.2: Self Check
  • 1.15.2: Additional Resources
• 1.15.3: Using Direct Variation to Solve Application Problems, Part 1
  • In this activity, you continued to find the constant of variation and write direct variation equations. In addition, you solved the equations for a given constraint in application problems.
  • 1.15.3: Self Check
  • 1.15.3: Additional Resources
• 1.15.4: Using Direct Variation to Solve Application Problems, Part 2
  • In this activity, you looked at a direct variation situation involving the miles a car can travel given the gallons of gas and distance.

After these activities, you completed the following practice:

• 1.15.5: Practice