1-3 Graphs of Equivalent Ratios

Property

The first quadrant of the coordinate plane is formed by a horizontal number line called the $x$-axis and a vertical number line called the $y$-axis that intersect at the origin, $(0, 0)$.

An ordered pair $(x, y)$ represents a specific point on this plane:

• The $x$-coordinate (first number) indicates the horizontal distance to the right of the origin.
• The $y$-coordinate (second number) indicates the vertical distance up from the $x$-axis.

Property

A set of equivalent ratios can be organized in a ratio table. Each row in the table represents a pair of corresponding values, which can be written as an ordered pair $(x, y)$.

Examples