Proportional Relationships - Graphs

Vocabulary flashcards covering key concepts, equations, and features of proportional graphs from the guided notes.

Proportional Graph

A linear graph representing a proportional relationship that must pass through the origin, or $(0, 0)$.

Origin

The point $(0, 0)$ on a coordinate plane through which any graph representing a proportional relationship must pass.

Constant of Proportionality

The constant ratio found on a graph by choosing a point and calculating the ratio of $\frac{y}{x}$.

$$y = kx$$

The standard equation used to represent a proportional relationship, where $k$ is the constant of proportionality or rate of change.

Rate of Change

The ratio of the change in $y$ to the change in $x$ ($\frac{y}{x}$) found from a graph or table.