Constant Proportionality from Tables
Constant of Proportionality from Graphs
100
Drew paints portraits. Find the constant of proportionality if it is a proportional relationship (with correct units!)
Number of portraits = x Time (in hours) = y
1 5
2 10
3 15
4 20
5 portraits per hour
100
Find the constant of proportionality with correct units
k =46
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
k = 4
200
What is K?
k = 1.2
300
Fred wrote notes during an exam. Find k (with correct units) if it is a proportional relationship.
Notes (pages) 8 9 10 11
Time (in hours) 16 18 20 23
It is not proportional, there is no k.
300
Find the constant of proportionality with correct units
5 gallons per min
400
A ferry transports bikes to an island. Write k.
Number of bikes (x) 10 12 14
Number of trips (y) 5 6 7
k = 0.5
400
Find k.
k = 3
500
Alice bought comics. Find the k (with correct units) if the table shows a proportional relationship.
Number of comics 2 4 6
Price (dollars) 6 12 16
It is not proportional, there is no k.
500
Find the constant of proportionality with correct units
60 miles per hour