7.RP.A.2.C: Definitions, Key Concepts & Examples

Front

Proportional Relationship

Back

A relationship where two quantities increase or decrease at the same rate.

Front

Equation for Proportionality

Back

t = pn

Front

Constant of Proportionality

Back

The constant value (p) in the equation t = pn.

Front

Direct Variation

Back

Another term for proportional relationship.

Front

Graph of Proportional Relationship

Back

A straight line through the origin.

Front

Unit Rate

Back

The constant of proportionality when n = 1.

Front

Example: Cost Equation

Back

If p = 5, t = 5n.

Front

Proportionality in Tables

Back

Consistent ratio between columns.

Front

Non-Proportional Example

Back

t = pn + 3 (not proportional).

Front

Proportionality in Real Life

Back

Speed = distance/time.