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Vocabulary and Scales
Unit Rates
Identifying and Writing Proportions
Creating Tables
100
These figures have the same shape but not necessarily the same size.
What is similar?
100
The unit rate of 540 feet in 90 seconds
What is 6 feet per second?
100
Are 9/27 and 6/20 proportional?
What is no?
100

Create a table for a proportional relationship with the unit rate of 5

x l y

0 l 0

1 l 5

2 l 10

200
A ratio that compares two quantities measured in different units.
What is rate?
200
The unit rate of 436 miles in 4 hours
What is 109 miles per hour?
200
Are 15/25 and 20/30 proportional?
What is no?
200

Create a table with the unit rate of 1/2

x l y

0 l 0

1 l 1/2

2 l 1

4 l 2

300
The ratio used to enlarge or reduce similar figures.
What is scale factor?
300
The better buy between $56 per 25 gallons or $32.05 per 15 gallons
What is $32.05 per 15 gallons?
300
Are 21/14 and 18/12 proportional?
What is yes?
300

Create a table with a unit rate of 0.75

x l y

0 l 0

1 l 0.75

2 l 1.5

4 l 2.25

400
The Wright brothers' Flyer had a 48inch wingspan. Carla bought a model of the plane with a scale factor of 1/40. What is the model's wingspan?
What is 12.1 inches?
400
The better buy between $160 per 5 grams or $315 per 9 grams
What is $160 per 5 grams?
400
A ratio proportional to 10/12?
What is 100/120, 5/6, or 20/24, etc?
400

If given a table that shows y= 12 when x = 15 the unit rate would be __________.

What is k = 4/5

500
The distance from Autin to Houston on a map is 4.3 inches. The map scale is 1 inch:38 miles. What is the actual distance?
What is 163.4 miles?
500
Kate earned $197.50 for 25 hours of work. How much money did she earn per hour?
What is $7.90 per hour?
500
A ratio proportional to 45/50
What is 90/100, 450/500, or 9/10, etc?
500

Create a proportional relationship table that includes a y = 2 when x =16

x   l   y

0   l   0

4   l   1/2

8   l   1

16 l   2