Unit Rate
Constant of Proportionality
Proportion Word Problems
Proportional Relationships
Tables
100
Jane drove 315 miles in 7 hours. How many miles did she drive on average each hour?
45 miles per hour
100
Bargains R Us store offers a 12 roll package of Wipey Wonder toilet paper for $2.59. Identify the Constant of Proportionality and write an equation.
C.O.P is 0.22
y = 0.22x
100
If there are 6 red cars sold to every 3 blue cars, is it the same proportion as 2 red cars to every 1 blue car?
Yes
100
Proportion or not a proportion?
Not a proportion
100
Complete the table
2
200
Find the unit rate for 1 minute:
25 feet in 10 seconds
150 feet
200
Isabelle babysits for 8 hours and makes $72.00. Identify the Constant of Proportionality and write an equation.
C.O.P is 9
y = 9x
200
The ratio of boys to girl at an elementary school is 5:6. If there are 75 boys attending the school, how many girls are there?
90 girls
200
does the graph represent a proportional relationship? Why or why not?
?
No, it does not pass through the orign.
200
Complete the table
8
300
Find the unit rate:
250 miles in 2 hours
125 miles per hour
300
5 bags of kidney beans weigh 1.25 pounds. Identify the Constant of Proportionality and write an equation.
C.O.P is 0.25 (0.25 pounds per bag)
y=0.25x
300
The distance that an automobile travels varies directly as the time it travels. If the car travels 280 miles in 7 hours, how far will it travel in 12 hours?
480
300
Solve for c.
c=21
300
Complete the ratio table. 
x=8
400
Find the unit rate:
20 pieces of candy for $0.80
$0.04 per piece of candy
400
There are 1141 individual cheerios in 7 boxes of Cheerios. Identify the Constant of Proportionality and write an equation.
C.O.P is 163 (163 cheerios per box of Cherrios)
y=163x
400
A store sees 120 customers in 8 hours. About how many customers would they see in 4 hours?
60
400
*DOUBLE JEOPARDY*
Does the table represent a proportional relationship? Why or or why not?
Yes because when you divide you get 13 for each ratio. (The constant of proportionality is 13. The unit rate is 13)
400
15
500
A store sees 120 customers in 8 hours. What is the unit rate (in customers per hour)?
15 customers per hour
500
The volleyball team bought 12 packs of shirts for a total of $790.08.Identify the Constant of Proportionality and write an equation.
C.O.P is 65.84
y=65.84x
500
If Justin can type 408 words in 4 minutes. What equation would represent the amount of words y he could type in x minutes?
How many words can he type in 15 minutes?
y = 102x
1530 words
500
Does each graph represent a proportional relationship? Why or why not?
Blue: No because it doe snot go through the origin.
Purple and Green: Yes, because they are straight and go through the origin.
500
Complete the ratio table
6 & 15