Proportional Relationships With Algebra

Which shows a proportional relationship?

• y = 1/2x - 1/2

• y = 1/2x

• y = 2x - 2

• y = 2x + 2

Which statement best describes the relationship between x and y in the table?

• Proportional

• Not Proportional

Why does this graph show a non-proportional relationship?

• Because it is proportional

• It goes through the origin

• It does not go through the origin

• It is a straight line

• y = 1/5x

• y = 5x

• y = 1/2x

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

What is the constant of proportionality? Use the format k = 2.

What is the constant of proportionality?

• k = 3

• k = 1/3

• k = 3x

• k = 1/3x

Write an equation for the relationship between x and y. Use format y = kx.

Write the equation of the graph. Use the format y = kx.

Is the graph proportional?

• Yes

• No