Graphing Proportional Relationships
Equations of Proportional Relationships
Identifying Proportional Relationships
Proportional Relationships
Random math
100
What is the ordered pair of the origin?
(0,0)
100
In the equation y=3x, what is the constant of proportionality?
3
100
True or False?
To find the constant of proportionality, you divide “x” by “y.”
FALSE
100
In a an ordered pair that represents the unit rate, which coordiate is 1?
x
100
Round 49.9286 to the nearest hundredths place
49.93
200
What is the constant? 
1/6
200
Will the graph of the equation y=3x + 5 be a straight line that starts at the origin?
no
200
Does this graph show a proportional relationship? How do you know?
NO
Does not start at the origin
200
If the point (4, 3) is on the graph of a proportional relationship, what is k?
k = 3/4
200
(100/10 - 5) + 5(3) - 2
18
300
What two characteristics make a graph proportional?
Straight line
Starts at the origin (0,0)
300
Is this equation proportional? y= ¾x
yes
300
(5,10) is a point on a line that represents a proportional relationship. What is the constant of proportionality?
k = 2
300
What is the unit rate?
13 apples per tree
300
What's the area of a rectangle that has a length of 5 meters and a width of 8 meters?
40 square meters
400
Is this graph proportional?
YES
400
If the constant of proportionality is 0.25, what is the equation for this relationship?
k = 0.25
y = 0.25x
400
Does the table show a proportionalrelationship? If so, what is the constant?
Yes; k=9
400
When creating this game, Mr. Brown was able to create 3 questions every 5 minutes. How long would it take to create a game with 24 questions?
40 minutes
400
What is 8 divided by 0?
Not 0! No number is correct. The answer is "undefined."
500
When x = 1 what does the y represent?
( 1, ?)
k
500
Kim tries to bike 15 miles (y) every 3 days (x).
What is the equation for this relationship?
y = 5x
500
Is the equation y = 1/6x proportional? If so, what is the constant?
Yes; k = 1/6
500
A recipe for chocolate chip muffins needs 4 cups of flour to 1 cup of chocolate chips. Which of the following shows another correct ratio for the recipe?
a. 1 cup of flour for 1 cup of chocolate chips
b. 3 cups of flour to 1 cup of chocolate chips
c. 8 cups of flour to 2 cups of chocolate chips
C
500
How many minutes are in 2.5 hours?
150 minutes
600
Which of the following is proportional?
a. 
A
600
Using this graph, what is the equation?
y = 20x
600
Does the table show a proportional relationship?
No
600
The point (4, 9) is on the graph of a proportional relationship. What is the equation for this graph?
y = 9/4x
600
(4 + 9/3) - 23
-1