Constant of Proportionality

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

Write an equation for the proportional relationship in the table.

• y=18x

• y=18.50x

• y=22.50x

• y=22x

What is the constant of proportionality? 

• 4

• 1/4

• 8

• 1/8

What is the constant of proportionality? 

• 6

• 3

• 2

• 1/2

What is the constant of proportionality? 

• 15

• 2/15

• 7.5

• 2

What is the constant of proportionality of the relationship represented by the table above?

• 75

• 0.013

• 1/75

• None of the above

Determine the constant of proportionality for the table. Express your answer as y = kx

• y = 1/2x

• x = 1/2y

• y = 2x

• k = x

What is the constant of proportionality? 

• 5

• 1/5

• 10

• 2

What is the constant of proportionality? 

• 20

• 4

• 1/5

• 5

The constant of proportionality is also the unit rate.

• True

• False