Proportional Relationships

What number is missing?

What is the constant of proportionality?

• 45

• 50

• 27

• 1

Does this represent a proportional relationship?

• Yes, because it goes through the origin and is a straight line.

• No, because it is negative.

Why does this graph show a non-proportional relationship?

• It doesn't, it is proportional because it is a straight line
• It goes through the origin
• It does not go through the origin
• It is a straight line

Find the unit rate:  $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

• $1.00 per pound
• $3.60 per pound
• $1.20 per pound
• $1.10 per pound

Simplify

 $\frac{15}{12}$  

•  $\frac{4}{3}$  

•  $\frac{5}{3}$  

•  $\frac{5}{4}$  

• 3

Is this graph proportional?

• Yes
• No

What is the constant of proportionality?

• 60

• 120

• 1

• 180

Determine whether the rates of change are constant or variable.

• Constant, the rates are the same.

• Variable, the rates are not the same.

• Constant, the rates are not the same.

• Variable, the rates are the same.

Does the table represent a proportional relationship?

• yes
• no