Ratios and Proportions Vocabulary

How many cross products are in every proportion?

• 1

• 2

• 3

• 4

A way to compare two different quantities.

• Constant of Proportionality

• Markup

• Ratio

• Tax

The ratio for a proportional relationship, also known at the unit rate or the value of y when x=1

• Constant of Proportionality

• Gratuity

• Proportional Relationship

• Simple Interest

When all ratios simplify to the same amount, or when a graph is a straight line and goes through the origin.

• Percent Change

• Percent Error

• Proportional Relationship

• Ratio

The ratio that compared the amount of the change to the original amount (can be positive or negative).

• Commission

• Constant of Proportionality

• Percent Change

• Tax

The ratio describing how far an estimate is from the actual amount.

• Commission

• Gratuity

• Markup

• Percent Error

A comparison of two quantities. Can be part-to-part, part-to-whole, or whole-to-part comparisons. Example: a to b, a:b, a/b.

• Ratio

• Value of a ratio

• Rate

• Unit rate

Two ratios that describe the same relationship. Example: 2:3 and 4:6

• Ratio tables

• Equivalent rates

• Value of a ratio

• Equivalent ratios

A diagram of two quantities of a ratio is called a

• proportion

• equation

• double number line

• tape diagram

Define Ratio

• A comparison of two quantities by division.

• A statement that two ratios are equivalent.

• Two quantities with different units.

• A rate with a second quantity of 1 unit.