Proportional or Not?
From Tables
From Equations
From Graphs
Unit Rates
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?
45
100
What is the constant of proportionality?
y=0.6x
0.6
100
The ordered pair on a graph of a proportional relationship is (5, 15). What is the constant of proportionality?
3
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
What is the constant of proportionality?
k= 12
200
If the constant of proportionality is -8, what is the proportional equation?
y=-8x
200
What is the constant of proportionality?
5
200
What is the unit rate?
2 gallons per lawn
300
Does the graph represent a proportional relationship? Be able to explain your answer.
Yes, it goes through the origin and is a straight line.
300
How much would it cost for 12 adults to go to the amusement park?
$900
300
Bananas are $0.59 per pound. What is the equation that represents this situation? USE b for total cost of bananas and p for pounds.
b=0.59p
300
Write and equation that represents the relationship.
y=5x
300
What is the unit rate?
3/2 miles per 2 minutes.
0.75 miles per minute
400
Which equations represent a proportional relationship? Select ALL that apply.
A. y=-3x + 4 C. y=x
B. x= 6y D. y=100x
C & D
400
How many cups of flour would be in 7 loaves of bread?
14
400
What is the equation for this data? Use t for tickets and c for cost.
c=3/2t or c=1.5t
400
The point (5, 21) is on the graph of a proportional relationship. What other points are on the graph? Select ALL that apply.
A. (8, 33.6) C. (3, 12.6) D. (11, 46)
B. (4, 16.5) E. (2, 8.4)
A, C, E
400
How do you divide fractions without a calculator?
Keep change reciprocal
500
I ate a 1/2 pack of skittles and then I ate 10 packs of skittles per hour. Is this proportional?
No, because I ate an additional 1/2 pack of skittles.
500
In a table, what would be the x value if
k = 2 and y = 10
x = 5
500
x= 6
y=-3
Write the equation for the above data.
y=-1/2x
500
What does the ordered pair (8,40) represent in the situation?
For every 8 pounds of sugar there is 40 cups.
500
How much of a worksheet can Hannah complete in an hour?
4/5 of a worksheet