Unit Rate and Constant of Proportionality

A proportional relationship can be written as an equation in the form ____ = _____  _____

• y = k+x
• y = k-x
• y = kx
• y = k/x

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

• 45
• 90
• 135

What is the constant of proportionality?

• 5
• 1/5
• 6

Is this table proportional or non-proportional?

• Proportional
• Non-Proportional

Which graph is proportional?

• A
• B
• C and D
• All of the graphs are proportional

Solve the proportion:

• 4
• 8
• 14
• 10

y=kx.  What does the k represent?

• constant of proportionality
• multiplier
• scale factor
• all of these are correct

What is the constant of proportionality for the following graph?

• 80
• 20
• 40
• 160

What is the constant of proportionality?

• 3
• 9
• 1
• No Answer

A box of cereal cost $3.59 for 30 oz. How much is the unit rate per ounce? Round to the nearest cent.

• 11 cents
• 12 cents
• 13 cents
• 10 cents