Graphing Proportional Relationships
Equations of Proportional Relationships
Identifying Proportional Relationships
Proportional Relationships RANDOM
POP QUIZ
100
What is the ordered pair of the origin?
(0,0)
100
Is this equation proportional? y= 3x
If so what is the constant of proportionality? (k)
PROPORTIONAL
k = 3
100
True or False?
To find the constant of proportionality, you divide the “x” by the “y”
FALSE
100
How do you find the constant of proportionality?
y/x
100
How many days is Hanukkah?
8
200
Using this graph, What is being compared? 
Earth weight to Moon weight
200
Is this equation proportional? y= 4x + 10
If so what is the constant of proportionality? (k)
Not proportional
200
Is the graph a proportional relationship? Why?
NO
Does not go through the origin
200
(3,4) (6,12)
Are the two points proportional?
NO
200
What is the most popular Christmas candy?
Candy canes
300
What 2 characteristics make a graph proportional?
Line is straight
Line goes through the origin (0,0)
300
Is this equation proportional? y= ¾ x
If so what is the constant of proportionality? (k)
PROPORTIONAL
k = 3/4
300
(5,10) is a proportional relationship. What is the constant of proportionality?
k = 2
300
Given the table is proportional. Solve for K
K = 13
300
In the movie Elf, what is Elf's girlfriend's name?
Jovie
400
Is this graph proportional?
YES
400
If the constant of proportionality is 0.25, what is the equation for the direct variation?
y = 0.25x or y = 1/4x
400
Is the table proportional?
Yes, it is proportional
400
When creating this game, Mr. Galindo was able to create 3 questions every 5 minutes. Keeping a constant rate, how long would it take to create a game with 24 questions?
40 minutes
400
What is Mrs. Stohr's favorite Christmas movie
Christmas Vacation or Family Stone
500
What is the x-coordinate when you graph the constant of proportionality?
(1, #)
500
Kim tries to bike 15 miles (y) every 3 days (x)
What is the constant of proportionality and equation for the relationship?
k = 5
y = 5x
500
Is the equation y = x/6 proportional?
Yes, the equation is proportional
500
A recipe for chocolate chip muffins call for 4 cups of flour to 1 cup of chocolate chips. Which of the following shows a proportional ratio for the recipe?
a. 8 cups of flour to 2 cups of chocolate chips
b. 3 cups of flour to 1 cup of chocolate chips,
c. 1 cup of flour for 1 cup of blueberries.
A
500
In the movie Rudolph the Red-Nosed Reindeer, what was Hermey's dream job?
Dentist
600
Which of the following is proportional?
a. 
A
600
Using this graph, What is the equation?
y = 20x
600
Is the table proportional?
No, the table is not proportional
600
(4, 28) (9, 63)
Are these two points proportional?
YES
600
Finish the movie quote:
"Why is the carpet wet TODD???"
I DON'T KNOW Margo!