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Name: _____________________________

Proportional Relationships

Directions: Circle the letter of the best answer.

1. What is the constant of variation for the equation 10y = -x?

A. -10

B. -1

C. [pic]

D. 10

2. What is the constant of variation for the equation 5x - 6y = 0?

A. [pic]

B. [pic]

C. [pic]

D. [pic]

3. Which equation represents the direct variation for the data in the table?

[pic]

A. [pic]

B. [pic]

C. [pic]

D. [pic]

4. Which equation represents the direct variation for the data in the table?

[pic]

A. [pic]

B. [pic]

C. [pic]

D. [pic]

5. Which equation is a direct variation that contains the point (-8, 10)?

A. [pic]

B. [pic]

C. [pic]

D. [pic]

6. Which equation is a direct variation that contains the point (-5, -9)?

A. [pic]

B. [pic]

C. [pic]

D. [pic]

7. Which equation models the relationship described?

The perimeter of an equilateral triangle varies directly with the length s of one of the sides.

A. [pic]

B. [pic]

C. [pic]

D. [pic]

8. Which equation models the relationship described?

You earn $10.50 per hour. The amount you earn varies directly with the number of hours you work.

A. [pic]

B. [pic]

C. [pic]

D. [pic]

9. Which equation is a direct variation?

A. [pic]

B. [pic]

C. [pic]

D. [pic]

10. Which equation is a direct variation that contains the point (-8, 2)?

A. [pic]

B. [pic]

C. 8[pic]

D. [pic]

Name: _____________________________

Proportional Relationships – Answer Key

Directions: Circle the letter of the best answer.

1. What is the constant of variation for the equation 10y = -x?

A. -10

B. -1

C. [pic]

D. 10

2. What is the constant of variation for the equation 5x - 6y = 0?

A. [pic]

B. [pic]

C. [pic]

D. [pic]

3. Which equation represents the direct variation for the data in the table?

[pic]

A. [pic]

B. [pic]

C. [pic]

D. [pic]

4. Which equation represents the direct variation for the data in the table?

[pic]

A. [pic]

B. [pic]

C. [pic]

D. [pic]

5. Which equation is a direct variation that contains the point (-8, 10)?

A. [pic]

B. [pic]

C. [pic]

D. [pic]

6. Which equation is a direct variation that contains the point (-5, -9)?

A. [pic]

B. [pic]

C. [pic]

D. [pic]

7. Which equation models the relationship described?

The perimeter of an equilateral triangle varies directly with the length s of one of the sides.

A. [pic]

B. [pic]

C. [pic]

D. [pic]

8. Which equation models the relationship described?

You earn $10.50 per hour. The amount you earn varies directly with the number of hours you work.

A. [pic]

B. [pic]

C. [pic]

D. [pic]

9. Which equation is a direct variation?

A. [pic]

B. [pic]

C. [pic]

D. [pic]

10. Which equation is a direct variation that contains the point (-8, 2)?

A. [pic]

B. [pic]

C. 8[pic]

D. [pic]

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