Writing an Equation for Proportions
Graphs
Proportions
Comparing Unit Rates
Constant of Proportionality
300
How do you know if a graph is proportional?
It is a straight line and goes through the origin.
300
Susan needs to buy her cat some litter box sand. At a store, 6 bags of litter sand costs $24.60. How much would Susan spend on 4 bags of litter sand.
16.40
300
What is the constant of proportionality?
y=6.25x
6.25
400
Which graph shows that 2 cookies cost $1.50, 6 cookies cost $4.50 and 8 cookies cost $6.00?
B.
400
Using the graph, what does the point (45,900) mean. 
900 bottles are capped in 45 seconds.
400
Sara walked 4/7 mile in 3/4 hour. How fast did she walk, in miles per hour?
16/20 miles per hour
400
Compare the two companies below and tell me which company is a better deal. You must show work to prove your answer.
AT&T is a better deal, it is $24.50 per month and Verizon is $27 per month.
400
The constant of proportionality is ______ miles per hour. 
490
500
The table shows the number of white and yellow flowers Cara used in 5 different arrangements. What is the equation for the table. 
y=3/2x
500
What is the constant of proportionality? And what does the constant of proportionality represent in this
graph?
20
It means there are 20 bottles filled in 1 second.
500
Elizabeth is making a Risotto recipe that calls for 2/3 cup of Risotto for every 3/4 cup of water. How much water will she need if she uses 1 1/2 cups of Risotto?
1 11/16
500
Dawn used 3.25 cups of flour to make 5 batches of cookies. Steve used 4.7 cups of flour to make 6 batches of cookies. Who used more flour per batch of cookies?
Steve used more
500
What is the constant of proportionality in the following equation?
y=3/4x
3/4