7.PFA.1 Unit Vocabulary

Front

The slope of a line that falls from left to right on a graph.

Back

Negative Slope

Front

The slope of a horizontal line on a graph.

Back

Zero Slope

Front

The factor by which one variable changes in relation to another variable in a proportional relationship.

Back

Constant of Proportionality

Front

The rate of change of a quantity relative to one unit or another quantity.

Back

Unit Rate

Front

A type of proportional relationship in which two variables increase or decrease at the same rate.

Example: The number of hours worked and the amount of money earned: an increase in hours worked, equals an increase in money earned; a decrease in hours worked, equals a decrease in money earned.

Back

Direct Variation

Front

The amount by which a quantity changes relative to another quantity.

*Also known as slope

Back

Rate of Change

Front

A relationship between two quantities in which the ratio (ex. 1:3) of their values remains constant.

Back

Proportional Relationship

Front

The slope of a line that rises from left to right on a graph.

Back

Positive Slope

Front

The change in the values of y for every change in the values of x

*Also known as the

rate of change

Back

Slope