## Axes

A coordinate plane has one horizontal axis, the $\blueD{x\text{-axis}}$ and one vertical axis, the $\greenD{y\text{-axis}}$.

## Origin

The $\blueD{x\text{-axis}}$ and $\greenD{y\text{-axis}}$ intersect at the $\goldD{\text{origin}}$. The $\goldD{\text{origin}}$ is located at ordered pair, $(0,0)$.

## Quadrants

The coordinate plane is divided into four quadrants. Quadrant one (QI) is the top right fourth of the coordinate plane, where there are only positive coordinates. Quadrant two (QII) is the top left fourth of the coordinate plane. Quadrant three (QIII) is the bottom left fourth. Quadrant four (QIV) is the bottom right fourth.

*Want to learn more about coordinate planes? Check out this video.*