Match the vocabulary to the proper definition.

Question

1. two quantities that increase or decrease (change) by the same factor; also known as directly related
constant of variation
2. a method of paying someone based on a percentage of their sales
commission
3. a small amount of money given for a service
directly proportional
4. the rate of change in a direct variation; also known as constant of proportionality
gratuity (or tip)
5. multiplying diagonally across the equal sign in a proportion
cross multiplication

Answer 1

Here are the correct matches for the vocabulary with their definitions:

1. directly proportional - two quantities that increase or decrease (change) by the same factor; also known as directly related
2. commission - a method of paying someone based on a percentage of their sales
3. gratuity (or tip) - a small amount of money given for a service
4. constant of variation - the rate of change in a direct variation; also known as constant of proportionality
5. cross multiplication - multiplying diagonally across the equal sign in a proportion