Ratios and Proportional Reasoning Unit Review

How could you find the Constant of proportionality for this problem?

• 2/3x

• 2/3

• 3/2

• Not enough info to answer.

What is the constant of proportionality (in miles per hour) based on the table?

• 45
• 90
• 135
• 2

What is the constant of proportionality for this table?

(Hint: Think about which variable is independent (input) and which is dependent (output)

• 1/9

• -9

• 9

• -1/9

Does this table represent a proportional or non-proportional relationship? Why?

• It is proportional because y=5x + 1

• It is not proportional because the table doesn't represent a constant ratio between x and y.

• It is proportional because it has a constant value in the table.

Which of the following statements about Amari and Gary is TRUE?

• The rate that Gary sells raffle tickets is half the rate that Amari sells raffle tickets.

• The rate that Amari sells raffle tickets is 8 times the rate that Gary sells raffle tickets.

• The rate that Amari sells raffle tickets is the same as the rate that Gary sells raffle tickets.

• The rate that Gary sells raffle tickets is double the rate that Amari sells raffle tickets.

Does this graph represent a proportional relationship?  

• No, because it doesn't pass through the origin.
• Yes, because it doesn't pass through the origin.
• Yes, because it intersects the y axis.
• No, because it intersects the x axis.

Write an equation to represent the graph.  Is it proportional or non-proportional.

• y = 5x - 3.  It is proportional
• y - 3 = 5x.  It is proportional
• y = -5x - 3.  It is not proportional
• y = 5x - 3.  It is not proportional.

Selam's mom got a new internet plan. The company charges her $0.15 for each minute plus a monthly fee of $40. What equation would be used to calculate how much the cost is for her new internet plan?

• y=0.15x - 40

• y=0.15x + 40

• y=40x - 0.15

• y=40x + 0.15

After 4 minutes a submarine has dove 600 feet below sea level. After 10 minutes it has reached a depth of 1,500 feet and after 25 minutes it is 3,750 feet below sea level. What is the constant of proportionality at which the submarine dives? 

• 300
• 150
• 3750
• 600

The graph shows the cost of Apples (A) and cost of Bananas (B) based on their weight. Which fruit costs more per pound? (Hint: Find k for both fruits then subtract)

• Apples and Bananas cost the same

• Apples cost $2 more per pound

• Bananas cost $2 more per pound

• Apples cost $4 more per pound