Proportional Relationships and Equations

If the relationship in the table is proportional, write its equation.

• The relationship is not proportional

Find the constant of proportionality on this table of values.

• k=3

• k=1

• k=0

• k=4

The constant of proportionality in the equation y = 4x is _____

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

• Yes; 1/3

• Yes; 3

• Yes; 5

• No

The table shows the amount of time Abigail works and the amount of money she earns. What is the missing value in the table?

Write an equation for this relationship.

• y = 18x

• y = 18.50x

• y = 22.50x

• y = 22x

Using the data in the table above, how much does 1 gallon of gas cost?

• $3.50

• $4.00

• $4.50

• $5.00

What is the equation y=kx for the table?

• y=1/3x

• y=3x

• y=5x

• y=1/5x

Write the equation for the table.

• x = 5y

• y = 5x

• y = 4x + 1

• y = x + 5

What is the constant rate of change?

• 45 mph

• 90 mph

• 135 mph

• 2 mph