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Direct Variation Review

Direct Variation Review. Question 1 . In a direct variation problem, the K is the ____________________. Question 2 . Fill in the equation: ----- = K What divided by what equals K?. Question 3 .

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Direct Variation Review

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  1. Direct VariationReview

  2. Question 1 • In a direct variation • problem, the K is the ____________________

  3. Question 2 • Fill in the equation: • ----- = K • What divided by what equals K?

  4. Question 3 • Find the constant of proportionality if x and y vary directly, and y = 60 when x = 15.

  5. Question 4 • Find the constant of proportionality if x and y vary directly, and y = 18 when x = 2.

  6. Question 5 • Find the constant of proportionality if x and y vary directly, and y = 225 when x = 9.

  7. Question 6 Find the constant of proportionality for the following table.

  8. Question 7 • The variables x and y vary directly. When x = 14, y = 56. What equation relates x and y?

  9. Question 8 • Find an equation of variation where y varies directly as x, when y = 400 and x = 125.

  10. Question 9 • Does the ordered pair (8, 48) satisfy the direct equation y = 6x? Explain why or why not.

  11. Question 10 • Which of the given values satisfies the equation y = 8x • x = 7, y = 28 B. x =4 , y = 2 • C. x =3, y = 24 D. x = 1.5, y = 5.5

  12. Question 11 • If y varies directly as x, and y = 64 when x = 4, find x when y = 48. Use a proportion to solve.

  13. Question 11 • Johnny scores 27 points in three basketball games. The season has 10 games. How many points can Johnny expect to score by the end of the season? (use a proportion)

  14. Question 12 Complete the following table for y = x

  15. Question 13 Suzy can walk 1 mile in 10 minutes. Create a table of values that represent time and distance. What direct variation equation would represent the miles and time that Suzy can walk?_________

  16. Question 14 • What are two properties of a direct variation graph?

  17. Question 15 • Write a proportion to show how you would solve the problem-do not solve: • A rose bush grows 3 inches every 4 months. How many inches will the bush grow in 1 year?

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