What is a Cartesian plane in math?

A Cartesian plane is a two-dimensional coordinate system defined by a horizontal axis (the x-axis) and a vertical axis (the y-axis) that intersect at a point called the origin. Each point on the plane can be represented by an ordered pair of numbers (x, y), where 'x' indicates the horizontal position and 'y' indicates the vertical position. This system allows for the graphical representation of equations and functions, facilitating the visualization of mathematical relationships.