Proportional Relationships

Are the following ratios proportional?

4:3 and 16:9

• yes

• no

Are the following ratios proportional?

1:2 and 5:10

• yes

• no

Does the table show a proportional relationship? If so, what is the constant of proportionality?

• no, it is not proportional

• yes, k = 5

• yes, k = 1

• yes, k = 1/5

Does the table show a proportional relationship? If so, what is the constant of proportionality?

• no, it is not proportional

• yes, k = 2

• yes, k = 1/2

• yes, k = 5

Does the table show a proportional relationship? If so, what is the constant of proportionality?

• no, it is not proportional

• yes, k = 4

• yes, k = 5

• yes, k = 4/5

Does the table show a proportional relationship? If so, what is the constant of proportionality?

• no, it is not proportional

• yes, k = 1.25

• yes, k = 2

• yes, k = 2.50

The following table is proportional. What equation represents the relationship?

• y = 3x

• 5 = 15x

• 15 = 5x

• y = 1/3x

• k = 3x

Jimmy earns $15 an hour. How much will he earn if he works 8 hours?

Jimmy earns $15 an hour. What equation represents this relationship?

Is the relationship proportional? If so, what is the constant of proportionality?

• no, it is not proportional

• yes, k = 3

• yes, k = 2

• yes, k = 2/3