Proportional or Not?
From Tables
From Equations
From 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 = 45
100
What is the constant of proportionality?
y=0.6x
k = 0.6
100
The ordered pair on a graph of a proportional relationship is (5, 15). What is the constant of proportionality?
k = 3 or k = 15/5
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 (y), after (x) sessions.
A) y =18x
B) y= 18 + x
C) y = x - 18
D) x = 18y
A
200
What is the constant of proportionality?
k = 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 (straight) line.
300
If it rains 3.5 inches in one hour on a proportional table. How much rain will fall after 9 hours?
31.5 inches
300
What is the unit rate earned it the total pay is $186 for 24 hours?
$7.75 per hour
300
Write and equation that represents the relationship.
y=5x
300
A
400
Which equation represents the proportional relationship?
x 2 5 8 10
y 12 30 48 60
A. y=-3x + 4 C. y=x
B. y= 6x D. y=100x
B
400
$2.49
400
What is the constant of proportionality in the equation: y= 5x
k = 5 or k = 5/1
400
What does the ordered pair (2,100) represent on this graph?
Something costs $100 for 2 hours.
400
It takes Esther 15 minutes to ride a roller coaster five times. Write an equation to represent the proportional relationship between the number of rides and the total amount.
y = 3x or y = 15/5x
500
Write any two ratios that are proportional and be prepared to explain how you know.
Answers may vary.
500
Write down one act of kindness that you have done in the kindness revolution.
Answers may vary :)
500
Write an equation with a coefficient that is a multiple of 4.
Answers may vary.
y = 4x y = 8x y=12x y=16x
500
Your team just earned 1000 free points!!!
The other teams earned 500.
:-)
500
4 cents per pound