Equivalent Ratios
Unit Rates
Tables
Proportional Equations
Graphs
100
What word describes two equivalent ratios?
Proportional
100
A truck drives 120 miles in 2 hours. What is its unit rate of speed? (miles per hour)
60 mph
100
Is the relationship between x and y proportional?
Yes! k=3/13
100
What is the constant of proportionality in the following equation?
y=23x
k=23
100
What unit rate is represented by this graph?
9 muffins per cup of flour
200
Are these two ratios equivalent? SHOW WORK TO EARN POINTS!
3:19 and 33:209
YES
200
A 12-pack of prime costs $30. What is the cost of a single bottle?
$2.50
200
What is the unit rate of speed that is represented by the table?
18 ft per hour
200
How do you find the constant of proportionality?
y/x = k
200
Write an equation to represent the proportional relationship between milliliters and minutes.
y = 8x
300
Write a ratio that is equivalent (proportional) to the ratio 12:29
ANSWERS VARY
Possible Answers:
24:58, 36:87, 48:116, ......
300
It costs $19.80 for 9 bags of airheads candy and costs $18.40 for 8 bags of mini snickers. Which is the better deal?
Airheads: $2.20 per bag
300
Is the relationship between x and y in the following table proportional?
Nope!
1/2 times 2 = 1, but 10 times 2 ≠ 19
300
What is the equation to represent a proportional relationship?
y = kx
300
What does k equal in the following graph?
k=2
400
The number of soccer players to baseball players in 6th grade can be represented by the ratio 32:21. If this ratio is representative of the number of players in the whole school, how many baseball players are there is there are 96 soccer players in the school?
63
400
What is the constant of proportionality of the following table?
k=2
400
If it costs $55 for 11 iced coffees, write an equation to represent the proportional relationship between cost and number of coffee is cost is y and number of iced coffees is x.
y = 5x
400
Write an equation to represent the proportional relationship in the graph.
y=1x
500
Is the relationship in the following table a proportional relationship?
no
500
What is the constant of proportionality if you are given the equation x=y?
k=1
500
Write an equation to represent the proportional relationship in the graph below.
y=6/5x