Graphing Proportional Relationships
Equations of Proportional Relationships
Identifying Proportional Relationships
Proportional Relationships RANDOM
Random - Halloween
100
What is the ordered pair of the origin on a Graph?
(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 (k), the formula is
k=x/y
FALSE
100
What is the formula to find the constant of proportionality (k)?
k=y/x
100
What two colors represent Halloween, formerly known as All Hallow's Eve?
Orange and Black
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) Key: (x,y)
Are the two points proportional?
NO
200
What were the first ever Jack O'Lanterns made from?
Turnips
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
x=5 and y=10 is a proportional relationship. What is the constant of proportionality?
k = 2
300
Given the table is proportional. Solve for K
X Y
K = 13
300
True or False
A Pumpkin is a Fruit.
True
400
Is this graph proportional?
YES
400
If the constant of proportionality is 0.25, what is the equation in the form of y=kx?
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
Fill in the Blank
Did you know that Mary Shelley wrote the story of Frankenstein when she was a Teenager? In the story, Frankenstein is the name of the _____.
Scientist
500
What is the equation for this graph in the form y=kx?
y=50x
500
Kim tries to bike 15 miles (y) every 3 days (x)
What is the constant of proportionality (k) and equation (y=kx) for this problem?
k = 5
y = 5x
500
Is the equation y = .25x 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
How long has Halloween been celebrated?
Over 2,000 years