A
coordinate system is a reference framework used to describe the positions of objects like , , and surfaces in a space. A fixed point called the
origin is used as a reference in the coordinate system. The most common types of coordinate systems are one-, two-, or three-dimensional.
Number Line
A is a coordinate system. The origin represents the number
numbers are placed along the line on the left-hand side of
while numbers are placed on the right-hand side of
Any can be graphed as a unique point on the number line.
Coordinate Plane
A coordinate plane, also known as a Cartesian or a rectangular coordinate system, is a coordinate system. It is a grid that results from intersecting a vertical number line with a horizontal number line at their zero points. The horizontal number line is usually named the axis and the vertical number line is usually the axis.
The positive numbers on the
axis are above zero and the negative ones are below zero. The origin is where the lines , which is the
Every point on a coordinate plane is plotted according to its
and
.
Three-Dimensional Coordinate System
In a coordinate system, three axes intersect. Each axis is to the other two axes. These axes are commonly labeled as the axis, the axis, and the axis. The origin of this system is the point where the three axes intersect.
Note that in this case, the
axis goes from front to back, the
axis from left to right, and the
axis from bottom to top. Any point in a three-dimensional system requires three coordinates called an
