Constant of Proportionality Tables and Equations

Write an equation for this relationship.

• y = 18x

• y = 18.50x

• y = 22.50x

• y = 22x

What is the formula for a proportional relationship?

• y=kx

• y=k/x

• z=ykx

• y=ky

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

• 10=kx

• 10=k

• y=10k

• y=10x

What does k represent in the equation y = kx?

• constant rate of change

• constant of proportionality

• the equation

• x/y

Identify the constant of proportionality.

• k = 2

• k = 4

• k = 1/2

• k = 1/4

• none (not proportional)

Identify the constant of proportionality.

• k = 1/0.45

• k = 0.45

• k = -0.45

• k = -1/0.45

• none (not proportional)

Is the graph proportional or non proportional?

• proportional

• non proportional

• both

• neither

What is the missing number in the ratio table?

• 72

• 85

• 76

• 90

What is the constant of proportionality in the graph?

• 46

• 92

• 184

• 41

What is the unit rate in this proportional relationship?

• 60 miles/1 hour

• 120 miles/ 2 hours

• 1 mile/ 1 hour