C3.Mod 2 Topic 1 Mult Choice Practice Test

Harry is making bouquets of balloons. He makes the bouquets so that 2 out of every 5 balloons are red. Which equation correctly compares the number of balloons he uses, x, to the number of red balloons, y?

Which equation represents a proportional relationship?

Which line represents a proportional relationship?

• y₁

• y₂

• y₃

• y₄

Tags

CCSS.7.RP.A.2D

A band consists of 3 woodwinds for every 7 members of the band. The independent quantity represents the total members of the band and the dependent quantity represents the woodwind members of the band. What is the constant of proportionality for this relationship?

Which statement is always true?

• A linear relationship is proportional.

• A linear relationship is non-proportional.

• A proportional relationship contains the point (0, 0).

• A non-proportional relationship has a constant rate of change.

Molly rides her scooter at a rate of 12.5 mph. Write an equation to represent the total distance Molly rides where x represents the time and y represents the distance traveled.

• y = 12.5x

• x = 12.5y

• y = 8x

• y = x + 12.5

The ratio of boys to girls at a school dance is shown in the graph. Which equations have a greater rate of change than the rate shown in the graph? (Hint: There is more than one right answer.)

• a. y = 1/5 x

• b. y = 1/2 x

• c. y = 2/9 x

• d. y = 2/3 x

Kelley is mixing blue and yellow food coloring to make green food coloring for her bakery. The relationship between the amounts of food coloring she mixes can be modeled by the equation b = 2/3y, where b represents the amount of blue food coloring and y represents the amount of yellow food coloring. Which of the following statements is true?

• Kelley uses 2 parts blue for every 3 parts yellow.

• Kelley uses 3 parts blue for every 2 parts yellow.

• Kelley uses 2 parts blue for every 5 parts yellow.

• Kelley uses 5 parts blue for every 2 parts yellow.

Which statement can you use to conclude that the relationship must be non-proportional?

• The graph of the relationship is linear.

• The y-intercept of the graph of the relationship is (0, 1).

• The relationship has a constant rate of change.

• The equation of the relationship is in the form y = kx.

When graphed, which line will have the greatest rate of change?

• y = 5x

• y = 3x

• y = 0.3x

• y = 0.5x