Constant of Proportionality

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

Write an equation for this situation.

• y=9.75x

• y=19x

• y=19.25x

• y=9.5x

If Reynaldo saves $48 in 8 days, how much could he save in two weeks?

• $102

• $84

• $56

• $6

Which graph is proportional?

• A

• B

• None of the graphs

• All of the graphs are proportional

What is the constant of proportionality?

• 3

• 4

• 2

• 5

What was Brian's unit rate?

• 3/2 word per minute

• 30 minutes per word

• 60 minutes per word

• 30 words per minute

Identify the constant of proportionality.

• k = 6

• k = 12

• k = 1/6

• k = 1/12

• none (not proportional)

Identify the constant of proportionality.

• k = 2

• k = 3

• k = 1.50

• k = 2/3

• none (not proportional)

The constant of proportionality of this graph is k = 45. What does it mean?

• The boat travels for 45 miles for every 45 hours

• The boat travels 1 mile for every 45 hours

• The boat travels 45 miles for every 1 hour

• The boat travels 1/45 mile for every 1 hour

Write an equation that represents the relationship between the weight(x) and the cost(y).

• y = 1/2 x

• y = 1/4 x

• y = 2x

• y = 4x