Basic Proportional Relationships

Are the following ratios proportional?
8/10, 28/35

• yes

• no

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

• yes

• no

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.

Is this table proportional or non-proportional?

• Proportional

• Non-Proportional

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

Find the constant of proportionality on this table of values.

• k=3

• k=1

• k=0

• k=4

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

• y=14

The constant of proportionality is 9/1. Interpret what that means in the context of this story.

• $9 per hour

• $9 for 3 hours

• 9 hours per $1

What is the equation y=kx for the table?

• y=1/3x

• y=3x

• y=5x

• y=1/5x

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