Identify Proportional Relationship

Are the following ratios proportional?
21/30, 56/80

• yes

• no

Are the following ratios proportional?
3/4, 36/40

• yes

• no

What is the constant of proportionality?

• X $3

• X $4

• X $2

• X $9

Is this table proportional or non-proportional?

• Proportional

• Non-Proportional

Find the constant of proportionality on this table of values.

• k=3

• k=1

• k=0

• k=4

What is the constant of proportionality (in miles per hour) based on the table?

• 45

• 90

• 135

• 2

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

• $8 per pound

• $35 per pound

• $5 per pound

• $0.125 per pound

The constant of proportionality can be found by finding the __________  _____________.

• unit rate

• ratio rate

• proportion answer

• rational number

Is this table Proportional?

• Yes, because the COP is different each time.

• Yes, because the COP is always X9.

• No, because the numbers are all different.

• No, because the COP changes each time.

What is the unit rate/constant of proportionality?

• 80 miles in 1 hours

• 20 miles in 1 hours

• 40 miles in 1 hours

• 160 miles in 1 hours