Direct Variation and the Constant of Proportionality Practice
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Last updated 3 months ago
11 questions
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Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 11
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Warm Up:
Alex makes earns $7.55 per hour.
Who earns more per hour? Alex, Jimmy, or Elvis?
Alex
Jimmy
Elvis
Practice #1: What is the Constant of Proportionality for the table below? _________
(Hint: Just find the unit rate - Cost per lb.)
$10 per lb.
$15 per lb.
$1.50 per lb.
$1.75 per lb
Practice #2: Devon’s favorite applesauce recipe calls for 2 teaspoons of cinnamon for every 3 apples. There is a proportional relationship between the number of apples, a, and the amount of cinnamon, c. Which equation represents this relationship?
Practice #3: What is the Constant of Proportionality?
1/5 miles per hour
2/3 miles per hour
6/5 miles per hour (or 1.2 miles per hour)
Practice #4: What is the cost per guest and the equation that goes with this graph?
$2 per guest so equation is y = 2x
$4 per guest so equation is y = 4x
$10 per guest so equation is y = 10x
Practice #5: Remember the constant of proportionality is y divided by x.
2
-2
3
-3
Exit Ticket #1: Identify the constant of proportionality in y = 0.8x using the situation:
$0.08 per pack
$0.80 per pack
$1.80 per pack
Exit Ticket #2: When Trayvon goes to the batting cages, he uses 2 tokens for every 10 pitches. There is a proportional relationship between the number of tokens Trayvon uses, t, and the number of pitches, p. Which equation represents this relationship?
t=5p
p=5t
t=20p
p=20t
Exit Ticket #3: What is the Constant of Proportionality (Unit Rate) of this graph? (Hint: Remember - the xy pair when x=1 , y is the unit rate)
1.25 gallons per minute
2.5 gallons per minute
5 gallons per minute
Exit Ticket #4: What is the equation of this graph?
y = 2x
y = 4x
y = 8x
Exit Ticket #5: Find the constant of proportionality of the table.
