Proportional Relationships Common Assessment

A proportional relationship can be written as an equation in the form:

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

When we compare quantities, we compare them as _____ over ______. 

• x over y
• y over x
• rate over one
• peanut butter over jelly

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

• x

• 14

• y

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

• 1/2

• x

• y

• 2

Which best describes the relationship represented in this table?

• proportional
• non-proportional

Does the table represent a proportional relationship? If so, what is the constant?

• Yes, k=1/3
• Yes, k=3
• Yes, k=5
• No

Write the equation for the table given.

• y = 1/3x
• y = 3x
• y = 1/2x
• y=x

Determine the missing value in the table.

• 15
• 3
• 1/3
• 9

Albert wants to buy some pens. He compares 4 different packs of pens. Which two packs of pens have the same cost per pen?

• Packs 1 and 2

• Packs 1 and 3

• Packs 2 and 4

• Packs 1 and 4

Write an equation for the proportional relationship in the table.

• y=18x
• y=18.50x
• y=22.50x
• y=22x