Tables
Graphs
Word Problems
Equations
100
Is there a proportional relationship between time (in hours) and portraits?
If so, what is the constant of proportionality in hours per portrait.
Number of portraits = x Time (in hours) = y
1 5
2 10
3 15
4 20
5 hours per portrait.
100
What is the constant of proportionality in gallons per minute?
5 (gallons per minute)
200
The table shows the amount of money earned by Harry for selling cups of ice cream. What is the constant of proportionality?
Cups Sold = x 3 5 7 9
Earnings ($) = y 12 20 28 36
4
200
What is the constant of proportionality in gallons per minute?
3 (gallons per minute)
200
Michael worked 40 hours in a week and earned $860. How much money did Michael earn per hour?
$21.50 per hour
200
The equation y = 4x shows the number of loaves of breads baked based on the amount of flour used.
What is the constant of proportionality?
4
300
Fred wrote notes during an exam.
Is there a proportional relationship between the time (in hours) and the pages of notes?
Notes (pages) (x) 11 9 10
Time (in hours) (y) 23 18 20
Not proportional.
No constant of proportionality.
300
The number of milk bottles sold can be determined by the equation y = 0.35x, where y is the number of bottles of milk and x is the number of boxes opened.
What is the constant of proportionality?
0.35
400
What is the constant of proportionality in miles per hour? You may leave your answer as a fraction.
6/5 or 12/10 or 1.2 (or any equivalent value)
400
ShopRite sells a 6 oz bag of popcorn for $3.96.
Costco sells a 10 oz bag of popcorn for $6.50.
What is the cost per ounce at each store?
ShopRite: $0.66 per oz.
Costco: $0.65 per oz.
500
Alice bought comics.
Is there a proportional relationship between the price (y) and comics (x)?
If so, what is the constant of proportionality?
Number of comics (x) 2 4 6
Price (dollars) (y) 6 12 16
Not proportional.
No constant of proportionality.
500
What is the constant of proportionality in miles per hour?
46 (miles per hour)
500
5 pounds of beef cost $29.
At this rate, how much would would 8 pounds of beef cost?
$46.40
500
What is the constant of proportionality: y = 2/3 x + 4
THERE IS NO KONSTANT SURPRISE!