Proportional or Not?
Tables
Equations
Graphs
Word Problems
100
Does the table represent a proportional relationship or not? Be able to explain your answer.
Not Proportional, when dividing y/x they do not all equal the same constant of proportionality.
100
What is the constant of proportionality?
k=3
100
What is the constant of proportionality?
y=0.6x
0.6
100
The ordered pair on a graph of a proportional relationship is (5, 15). What is the constant of proportionality?
3
100
Peter sells shoes. On Monday he sold 15 shoes in 5 hours. On Tuesday he sold 18 shoes in 6 hours. How many shoes does Peter sell in an hour?
3 shoes per hour
200
Does the table represent a proportional relationship? Be able to explain your answer.
Yes, all equal the same constant of proportionality.
200
Write an equation that shows the proportional relationship.
y =12x
200
The community center provides tutoring for students. The cost of tutoring is $18 per session. Write equation to model the total cost (C), after (s) sessions.
C=18s
200
What is the constant of proportionality?
5
200
David is making his own strawberry yogurt. He uses 4 cups of milk for every 14 strawberries. Write an equation that represents the situation.
y=3.5x
300
Does the graph represent a proportional relationship? Be able to explain your answer.
Yes, it goes through the origin and is a linear line.
300
How much would it cost for 12 adults to go to the amusement park?
$900 for 12 Adults
300
What is the unit rate earned if the total pay is $186 for 24 hours?
$7.75 per hour
300
Write and equation that represents the relationship.
y=5x
300
Jasmine bought 32 kiwi fruit for $16. How many kiwi can Lisa buy if she has $4?
8 kiwi fruit
400
Write an equation that represents the proportional relationship?
x 2 5 8 10
y 12 30 48 60
y=6x
or
x=y/6
400
$2.49
400
What is the constant of propotionality in the equation: y= 5x + 9
5
400
Write an equation for the cost per cookie.
y=.50x
400
m = 1.5c
Kaylee is selling lemonade. This is the formula she will use for relating the money she hopes to make (m) to the cups (c) she will sell.
a.) How much is she selling each cup for?
b.) What would she use this formula to figure out?
a.) $1.50
b.) How much money she will make if she knows the number of cups.