Constant Proportionality from Tables
Constant from Graphs
COP from Words
Percents
Mrs. Overmyer
100
Drew paints portraits. Find the constant of proportionality if it is a proportional relationship
Time (in hours) = x Number of portraits = y
1 5
2 10
3 15
4 20
5
100
Find the constant of proportionality with correct units
46 miles per hour
100
Morgan bought 24 batteries packed in 6 equal packs. What is the unit rate per pack?
4 batteries per pack
100
What is 10% of $40?
$4
100
What month is Mrs. Overmyer's birthday?
April
200
The table shows the amount earned by Harry for selling ice cream. Find k.
Cups Sold = x 3 5 7 9
Earnings ($) = y 12 20 28 36
4
200
What is K with proper units?
1.2 miles per hour
200
Julie brought 5 pounds of cans to a recycling place and was paid $2. Find the constant of proportionality (cost per pound)
$0.40/pound
200
What is 75% of 200kg?
150kg
200
What is Mrs. Overmyers dogs name?
Oscar
300
Fred wrote notes during an exam. Find the CoP (with correct units) if it is a proportional relationship.
Notes (pages) 8 9 10 11
Time (in hours) 18 19 20 21
It is not proportional, there is no CoP.
300
Find the constant of proportionality with correct units
5 gallons per min
300
To make juice, Michael combines 1/4 liters of water and 2/3 scoops of juice mix. What is the CoP (scoops per liter)?
8/3 or 2 2/3 scoops per liter
300
In a class of 24 students, 75% of them are present. What percentage are away? How many students are away?
25%. 6 students are away.
300
What is Mrs. Overmyer's favorite color?
Purple
400
A ferry transports bikes to an island. Write k (which is the CoP).
Number of bikes (x) 10 12 14
Number of trips (y) 5 6 7
k = 0.5
400
3 gallons per minute
400
Zachary's time machine needs 14 megawatts of electricity to travel back 7 years. What is the unit rate (megawatts per year)?
2 megawatts per year
400
What is 2.5% of $60?
$1.50
400
What month did Mrs. Overmyer get married?
May
500
Alice bought comics. Find the k (CoP with correct units) if the table shows a proportional relationship.
Number of comics 2 4 6
Price (dollars) 6 12 18
k = 3 dollars per comic
500
Find the constant of proportionality with correct units
60 miles per hour
500
A dog can walk 1 1/2 miles in 3/4 of an hour. How far can the dog walk in an hour?
2 miles
500
A DVD priced at $30 has a 20% discount applied. How much is the discount and what is the sale price?
Discount is $6 and sale price is $24
500
What letter does my husbands name start with?
J