Constant of Proportionality

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.

• 3 cars to 12 trucks

• 12 trucks to 3 cars

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

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

• $60.00

• $6.30

• $63.00

• $62.00

What is the ratio of red apples to green apples

• 7 apples to 3 green

• 4 red apples to 3 green apples

• 4 red apples to 7 apples

• 3 green apples to 4 red apples

Lynnette can wash 95 cars in 5 days. How many cars does she wash each day?

• 475 cars per day

• .05 cars per day

• 19 cars per day

• 15 cars per day

What is the constant of proportionality?

• $3

• $2

• $4

• $9

What is the constant of proportionality for the table above?

• 2

• 3

• 1/2

• None of these

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

Is this table Proportional?

• Yes, because the constant is different each time.

• No, because the numbers are all different.

• No, because the constant changes each time.

• Yes, because the constant is always 9.

Is this table proportional or non-proportional?

• Proportional

• Nonproportional

Is this table proportional or non-proportional?

• Proportional

• Nonproportional