Dining room Table
Graphs are fun
C of P
eQuAtIoN wRitIng
Use what you know
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 portraits per hour
100
Find the constant of proportionality with correct units
k =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
Navelle earns $12 per hour. Write an equation that represents Navelle's earnings.
y = 12x
100
Jeff earned $400 working a 40-hour work week.
Find Jeff's hourly wage and use it to predict how much he will make if he works for 47 hours.
Jeff makes $10 per hour and would make $470 IN 47 hours.
200
The table shows the amount earned by Harry for selling ice cream. Find k.
Cups Sold = x 3 5 7 9
Earnings ($) = y 12 20 28 36
k = 4
200
What is K with proper units?
k = 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
$0.40/pound
200
Gianna reads 27 pages in 9 minutes. At What rate does Gianna read?
Write an equation for this relationship.
Gianna reads 3 pages per minute.
y = 3x
200
Janine sells 16 apples for $8.00. What is the unit price for each apple?
How much would she earn if she sold 64 apples?
The unit price is $0.50 per apple.
Janine would earn $24 for selling 64 apples.
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
Write an equation to represent this graph
y= 5x
300
To make juice, Michael combines 4 liters of water and 12 scoops of juice mix. What is the CoP?
3 scoops per liter
300
Jude sends 45 E-mails in 15 minutes.
How many E-mails did he send per minute? Write an equation to represent this situation.
He sent 3 E-mails per minute.
y = 3x
300
Maxine works at law office. the equation y = 135x represents her earnings.Determine how much money she makes if she works 40 hours.
Maxine earns $5,400 in 40 hours.
400
A ferry transports bikes to an island. What is K? Write an equation to represent this situation.
Number of bikes (x) 10 12 14
Number of trips (y) 5 6 7
k = 0.5
y = .5x
400
write an equation to represent this graph
y=3x
400
Zachary's time machine needs 14 megawatts of electricity to travel back 7 years. What is the unit rate?
2 megawatts per year
400
Lenasia earned $640 in a 40-hour work week.
What is Lenasia's hourly rate of pay? Write an equation to represent this situation
Lenasia earns $16 per hour.
y = 16x
400
The equation y = 55x represents the rate of the Long Island highway speed limit, in miles per hour. Let x represent the number of hours driven and y represent the total miles driven.
How long was Francis driving if he drove 247. 5 miles at the speed limit.
Francis drove for 4.5 hours.
500
Alice bought comics. Find the k (CoP with correct units) if the table shows a proportional relationship. AND write an equation.
Number of comics 2 4 6
Price (dollars) 6 12 18
k = 3 dollars per comic
y = 3x
500
How far would the family travel in 10 hours? 
600 miles in 10 hours
500
An item that is 4 feet long is 48 inches long. What is the unit rate per foot?
12 in per foot
500
A helicopter propeller spins 2400 revolutions in 4 minutes. Write an equation to represent this proportional relationship.
y = 600x
500
If Jackson ate hamburgers at a rate of 3.5 hamburgers per minute and Jacen ate hamburgers at a rate of 4.7 hamburgers per minute.
How many more hamburgers did Jacen eat then Jackson eat in 10 minutes?
12 burgers more