Graphing Proportional Relationships
Equations of Proportional Relationships
Identifying Proportional Relationships
Proportional Relationships RANDOM
Countries
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
What language do they speak in Brazil
Portuguese
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
Where is the Eiffel tower located?
Paris, France
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
Capital of South Korea
Seoul
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
It takes Bart 10 minutes to finish writing "I will not talk in school" 30 times. How long would it take him to "I will not talk in school" 90 times
.
30 minutes
400
Capital of Egypt
Cairo
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
Name the largest country in the world
Russia
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
Capital of Greece
Athens