Solving Problems with Proportional Relationships

What is the dependent variable?

• number of classes

• number of people

• the cost

• figure 1.

Does the table show a proportional relationship?

• Yes

• No

Find the constant of proportionality in the graph below.

• 9

• 4.5

• 3

• 1.5

Which shows a proportional relationship?

• y = 1/2x - 1/2

• y = 1/2x

• y = 2x - 2

• y = 2x + 2

Which statement best describes the relationship between x and y in the table?

• Proportional

• Not Proportional

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

Is this table proportional or non-proportional?

• Proportional

• Non-Proportional

• both

• neither

This is a table with a proportional relationship between A and B.  Find the missing value of B. 

• 33

• 44

• 32

• 48

Which statement below accurately represents the graph?

• $100 is earned for each hour worked

• $200 earned for every 2 hours worked

  is the unit rate

• $62.50 is earned for every hour worked

• $300 is earned after working 4 hours

The graph shows the amount of money that Terrance saves each week from his lawn moving job. Which best represents the constant of proportionality?

• (0, 0)

• (1, 200)

• (200, 1)

• (2, 200)