Constant of Proportionality

Which best describes the graph represented in this table?

•  proportional

• non-proportional

Which statement below accurately represents the graph?

• $100 is earned for each hour worked

• $200 earned for every 2 hours worked
  is the unit rate

• $500 is earned for every 8 hours worked

• $300 is earned after working 4 hours

What is the constant of proportionality?

• $3

• $4

• $2

• $9

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

• unit rate

• ratio rate

• proportion answer

• rational number

The constant of proportionality in the equation y = ½x is _______. 

• x

• y

• 1/2

• 2

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

Is the given table a proportional relationship? If so, what is the constant?

• Yes; 1/3

• Yes; 3

• Yes; 5

• No

What makes a graph proportional?

• Straight line

• The line goes through the origin

• Curvy line

• Straight line and the line goes through the origin

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

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

• y = k+x

• y = k-x

• y = kx

• y = k/x