the rate that is simplified so that it has a denominator of 1 unit
What is unit rate or constant?
100
What is the Constant of proportionality?
Popcorn
Bags of Popcorn 0 1 2 3 4
Cost ($) 0 4 8 12 16
What is 4
100
Based on Graph 3, is it proportional and if so explain how you know?
What is a straight line though the origin.
100
Mr. Wright make 12 baskets in game one, 15 baskets in game two, and 18 baskets in game three. Is the number of games played proportional to the number of baskets Mr. Wright makes?
What is not proportional
100
Based on Table 1, Write the equation that represent the constant
What is y=75x
200
The relationship between two ratios with a constant rate or ratio
What is the proportional?
200
What is the constant?
Bags of Candy 3 4 5 6
Cost ($) 9 12 15 18
What is 3
200
Based on Graph 3,What is the constant?
What is 15
200
If a boy post 3 pictures on face book on one day to 6 pictures a girl post on the same day, is the relationship between boy's posts and girl's post proportional? Explain
What is proportional because the ratio can be simplified to 1/2.
200
Based on Table 2, Write the equation that represent the constant.
What is y=45x
300
The rate of change between any two points on a line. Also tells how steep the line is
What is the slope?
300
What is the constant?
Miles 35 40 45 50
Gallons 7 8 9 10
What is 5
300
Based on Graphs 1 and 2, which one shows a proportional relationship?
What is graph 2
300
If it takes the Jones family 2 days to travel 1,240 miles, how many days will it take them to travel 2,480 miles?
What is 4 days
300
The distance y traveled in miles by the Chang family in x hours is represented by the equation y=20x. Identify the constant of proportional. Then explain what it represent in this situation.
What is 20 and 20miles in 1 hour
400
A rate that describes how one quantity changes in relation to another. Also called the constant
What is the rate of change
400
What does the point (3, 12) represent is the table?
Bags of Candy 1 2 3 4
Cost $ 4 8 12 16
What is 3 bags cost $12
400
Based on Graph 1, why is the graph not proportional?
What is not through the origin
400
Brian can get an 8-pack of bottled sports drink for $5.28. How much would Brian have to pay for a 6-pack of bottled sports drink if the ratios are proportional?
What is $3.96
400
Determine if each equation represent a direct variation. select yes or no
1. y=4x +1
2. y= 7.5x
What is no yes
500
The relationship between two variable quantities that have a constant ratio. Use the equation y=kx
What is the direct variatiion
500
What does the point (0,0) represent in the table?
Bags of Popcorn 1 2 3 4
Cost ($) 4 8 12 16
What is zero cost for zero bags
500
Based on Graph 3, what does the point (0, 0) represent?
What is zero minutes to zero pints
500
If y = 4 when x = 10, find y when x = 5.
What is 2
500
Which of the equations represent the situation below y=18x or y=15x
seconds x 2 6 7 11
feet 30 90 105 165