Constant of Proportionality Word Problems with Rational Numbers

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

What is the constant of proportionality for the following graph?

• 80
• 20
• 40
• 160

Identify the constant of proportionality.

• k = 2x

• k = 2

• k = 4

• none (not proportional)