These lines are usually evenly spaced and are marked by numbers. The coordinate plane usually features many horizontal and vertical lines that make it look like a grid. Like the number line, the coordinate plane needs to have a scale. Just as we can plot both positive and points on a number line, we can plot both positive and negative points on the coordinate plane. The coordinate plane essentially expands the concept of a number line to two dimensions. In certain situations, the x-axis is also known as the “independent variable.” Similarly, the “dependent variable” is the y-axis. Their intersection point is called the origin. The vertical line is called the y-axis, while the horizontal line is called the x-axis. The coordinate plane consists of two lines called axes that meet at a right angle. Because it uses a grid, this system is also sometimes known as rectangular coordinates. This name refers to the French mathematician, Rene Descartes, who was the first to publish a description of the plane. Of all coordinate planes, the most famous and commonly used is the Cartesian coordinate system. ![]() ![]() If you have not already done so, you should quickly review coordinate geometry to get the most out of this section.Ī coordinate plane is a system for plotting points and other geometric objects in two dimensional space. In this section, we will go over how to plot points on the coordinate plane and determine the position of given points. In particular, this allows us to compare geometric objects by using a predetermined reference point. The coordinate plane makes it possible to do calculations in geometry. The coordinate plane is defined as a two-dimensional plane used to determine the position of geometric objects with reference to a given point. Coordinate Plane – Explanation and Examples
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