Representing Proportaionality Relationships by Equations
Ratios and Proportions, and more...
 
1. EASY

If y represents the number of tires a car dealership needs to purchase, and x are the number of cars that need tires, find y if x = 25.

\(y = 4x\)

  1. 100
  2. 50
  3. 4
  4. 32
  5. 40
 
2. EASY

If x represents John's age and x = 15, find Sabrina's age, y, if

\(y = \frac{2x}{3}\)

  1. 10
  2. 15
  3. 20
  4. 25
  5. 30
 
3. EASY

If x is the number each student can bring for the test, and x = 2, how many students are there (y)?

\(y = 5x\)

  1. 2
  2. 4
  3. 6
  4. 8
  5. 10
 
4. MEDIUM

If y represents the average number of lightbulbs in a room, and x are the number of rooms, find y if x = 10.

\(y = \frac{3x}{2}\)

  1. 10
  2. 5
  3. 8
  4. 21
  5. 15
 
5. HARD

If y represents the average number of employees in a store, and x are the number of stores, find y if x = 87.

\(y = \frac{2x}{3}\)

  1. 58
  2. 32
  3. 21
  4. 23
  5. 16