Equations for Proportional Relationships

Write the equation for the table. 

What is the formula for a proportional relationship?

• y = kx

• y = k/x

• z = ykx

• y = ky

Write the equation of the proportional relationship using the format y = kx.

Write the equation for the graph.

What coordinate on a graph would represent the constant of proportionality for the table?

The cost of 4 pounds of grapes is $24.36. What is the constant of proportionality the relates cost in dollars, y, to the number of pounds of grapes, x? (Enter number value only)

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

• y

• x

• 14

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

Which best describes the equation?
y = 75x

• Proportional

• Nonproportional