Proportional or Not?
From Tables
From Equations
From Graphs
Writing Equations
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
The equation that shows the proportional relationship between t, the total cost, and p, the number of pounds of apples.
What is t=3p
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
Given the equation t = 3h where t is the total cost and h is the number of hotdogs, what is the cost of 4 hotdogs?
What is $12?
200
The constant of proportionality as an ordered pair.
What is (1,5)?
200
David is making his own strawberry yogurt. He uses 4 cups of milk for every 18 strawberries. Write an equation that represents proportional relationship between the strawberries, s and the cups of milk, m.
What is s=4.5m?
300
Does the graph represent a proportional relationship? Be able to explain your answer.
Yes, it goes through the origin and is a linear line.
300
How much would it cost for 12 adults to go to the amusement park?
What is $900?
300
Given the equation t = 3h where t is the total cost and h is the number of hotdogs, if I spent $15 at the baseball game, how many hot dogs did I purchase?
What is 5 hotdogs.
300
The ordered pair (4,20) represents...
What is 20 miles in 4 minutes?
300
Write the equation for the graph, if m represents the minutes and L, represents the laps.
What is L= 2m?
400
Which equations represent a proportional relationship? Select ALL that apply.
A. y=-3x + 4 C. y=x
B. x= 6y D. y=100x
B & C & D
400
How many cups of flour would be in 7 loaves of bread?
What is 14?
400
It is snowing. No, really, look outside.
MADE YOU LOOK!
Two inches of snow falls in 25 minutes. Write an equation that describes how the amount of snow (s) is proportional to time (t).
s = 0.08t or s = (2/25)t
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) E. (11, 46)
B. (4, 16.5) D. (0,0) F. (2, 8.4)
A, C, D, F
400
I purchased 6 candy bars for $4.50. Write the equations that shows the relationship between t, the total amount spent, and c, the number of candy bars.
What is t = .75c?
500
Draw an example of a graph that goes through the point (2,3) and is NOT proportional.
Answers may vary.
500
Find the missing values of the table
x= 4
y= 20
500
Name an ordered pair that would go through the line of y=1/2x.
Answers will vary
500
What does the ordered pair (8,40) represent in the situation?
For every 8 pounds of sugar there is 40 cups.
500
Write the NON-PROPORTIONAL equation for the following situation: My gym charges a one-time membership fee of $25 and then $10 every month. Use t to represent the total cost and m to represent the number of months.
What is t = 10m + 25?