Constant Rate of Change/Constant of Proportionality

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

Describe the characteristics of a graph that is proportional?

• Linear

• The line goes through the origin

• Curvy line

• Linear and the line goes through the origin

Which company shows a greater rate of change?

• Water's Edge Rafts

• Ryan's Rafts

Analyze the point (3, 27). What does the point represent? 

• The point (3,27) represents 27 shirts for $3. 

• The point (3,27) represents $27 for 3 shirts. 

What is the constant of proportionality ? (Unit rate)

• 2 tiles per minute

• 3 tiles per minute

• 4 tiles per minute

• None of the above

What is the constant of proportionality? 

• 20

• 4

• 1/5

• 5

What is the constant of proportionality? 

• 6

• 3

• 2

• 1/2

If the constant of proportionality is 10, which of the following is the correct proportional equation?

• 10=kx

• 10=k

• y=10k

• y=10x

The equation y=5x describes a proportional relationship between x and y. What is the constant of proportionality?

• 6

• 4

• 7

• 5

The constant of proportionality can be found by finding the __________  _____________.

• unit rate

• ratio rate

• proportion answer

• rational number