2. Notes Over 4.5 Writing a Direct Variation Equation In Exercises 1-6, the variable x and y vary directly. Use the given values to write an equation that relates x and y. Direct Variation Two quantities that model the equation y = kx, where k is the constant of variation

3. Notes Over 4.5 Writing a Direct Variation Equation In Exercises 1-6, the variable x and y vary directly. Use the given values to write an equation that relates x and y. Direct Variation Two quantities that model the equation y = kx, where k is the constant of variation

4. Notes Over 4.5 Writing a Direct Variation Equation In Exercises 1-6, the variable x and y vary directly. Use the given values to write an equation that relates x and y. Direct Variation Two quantities that model the equation y = kx, where k is the constant of variation

5. Notes Over 4.5 Writing a Direct Variation Equation In Exercises 1-6, the variable x and y vary directly. Use the given values to write an equation that relates x and y. Direct Variation Two quantities that model the equation y = kx, where k is the constant of variation

6. Notes Over 4.5 Writing a Direct Variation Equation In Exercises 1-6, the variable x and y vary directly. Use the given values to write an equation that relates x and y. Direct Variation Two quantities that model the equation y = kx, where k is the constant of variation

7. Notes Over 4.5 Writing a Direct Variation Equation In Exercises 1-6, the variable x and y vary directly. Use the given values to write an equation that relates x and y. Direct Variation Two quantities that model the equation y = kx, where k is the constant of variation

8. Notes Over 4.5 Using a Ratio to Write a Model The person’s weight on Mars would be pounds. 7. Use the ratio model to estimate a person’s weight on Mars if the person weighs 120 pounds on Earth.

9. Notes Over 4.5 Using a Ratio to Write a Model The person’s weight on Earth would be 163.2 pounds. 8. Use the ratio model to estimate a person’s weight on Earth if the person weighs 62 pounds on Mars.

10. Notes Over 4.5 Using a Ratio to Write a Model 9. A person who weighs 160 pounds on Earth weighs 139 pounds on Venus. a. Write a model that relates a person’s weight E on Earth to that person’s weight V on Venus.

11. Notes Over 4.5 Using a Ratio to Write a Model 9. A person who weighs 160 pounds on Earth weighs 139 pounds on Venus. b. A person weighs 195 pounds on Earth. Use the model to estimate that person’s weight on Venus. The person’s weight on Venus would be 169.4 pounds.

12. Notes Over 4.5