unit rate
proportional tables
Proportional graphs
Proportional equations
Constant of proportionality
100
It is $39.96 for 4 pizzas. How much is it for 1 pizza?
It cost $9.99 for 1 pizza
100
Complete the proportional table.
100
Is the graph proportional? Explain.
Yes, it has a straight line that starts at the origin.
100
Write an equation for the proportional table.
y = 65x
100
What is the constant of proportionality (unit rate)?
Stacey hikes 12 miles in 3 hours and 20 miles in 5 hours.
4 miles per hour
200
Sally can jump 36 times in ½ minute. How much can she jump in 1 minute?
Sally can jump 72 times in 1 minute.
200
Complete the proportional table.
200
Is the graph proportional?
No, it does not start at the origin.
200
What does the equation(rule) mean for the following problem. y = 65x
Each hour the car goes 65 miles.
200
What is the constant of proportionality (unit rate)?
y = 3/4x
3/4
300
You need 1/2 cup of sugar for 2/3 of a serving. How much sugar is needed for 1 serving?
You need 3/4 cup of sugar for 1 serving
300
Is the table proportional? Explain.
No, they do not have the same unit rate.
300
What is the unit rate for the following proportional graph?
$20 per ticket
300
Write an equation to represent the proportional graph.
y = 2x
300
What is the constant pf proportionality?
75 miles per minute
400
John bought 5 books for $42.50. How much is 1 book?
It cost $8.50 for 1 book.
400
Is the table proportional? Explain.
Yes, it has the same unit rate of $2.65.
400
Write an equation to represent the proportional relationship.
y = 2x
400
What doe the equation (rule) mean for the following relationship?
y = 1.5x
Each pound cost $1.50.
400
What is the constant on proportionality?
5 feet per second
500
Linda makes $18.50 an hour. If she works 29 ½ hours this week, what will her gross pay be?
$545.75
500
If k=12.75/1, in exact order, what would the last three y values be if the x's were 3, 5, and 7?
38.25, 63.75, and 89.25
500
What are the three characteristics of a proportional graph?
Straight line, crosses the origin, constant K
500
Students are asked to bring canned goods to school for a non-perishable food drive. Each boy brings 3 cans. Each girl brings 4 cans. What would be the one proportional equation be to represent the total cans brought for both boys and girls?
y = 7x
500
What letter and formula do we use to find the constant of proportionality?
k and k=y/x