Proportions, Proportions, Proportions

What is the unit rate in this proportional relationship?

• 60 miles/1 hour

• 120 miles/ 2 hours

• 1 mile/ 1 hour

What is a Ratio?

• Is a comparison of two quantities 

• A rate with a denominator of one

• It is when the only factor the numerator and denominator share is a one 

• Two decimals that can be multiplied

What is the ratio of red apples to green apples

• 7 apples to 3 green

• 4 red apples to 7 apples

• 4 red apples to 3 green apples

• 3 green apples to 4 red apples

The two rectangles are scale drawings. What is the measurement of x?

• 21

• 1.25

• 20

• 4

Which line shows a proportional relationship between x and y?

• Line L

• Line M

Which statement best describes the relationship between x and y in the table?

• Proportional

• Not Proportional

The Williams family bought four concert tickets for $252.  What was the price per ticket?

• $60.00

• $63.00

• $6.30

• $62.00

A parking lot has 3 cars and 12 trucks. Find the ratio of cars to trucks. Select all the true ratios.

• 3 trucks : 12 cars.

• 12 cars to 3 trucks

• 3 cars to 12 trucks

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $5 per pound

• $35 per pound

• 0.125 pounds per dollar

How do you feel about proportions and scale drawing (i.e. thumbs up, thumbs down, thumbs middle)? Explain.