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
0. numbers are placed along the line on the left-hand side of
0, while numbers are placed on the right-hand side of
0. Any can be graphed as a unique point on the number line.
Coordinate Plane
A coordinate plane 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 x-axis and the vertical number line is usually the y-axis.
The positive numbers on the
y-axis are above zero and the negative ones are below zero. The origin is where the lines , which is the
(0,0). Every point on a coordinate plane is plotted according to its
x- and
y-.
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 x-axis, the y-axis, and the z-axis. The origin of this system is the point (0,0,0) where the three axes intersect.
Note that in this case, the
x-axis goes from front to back, the
y-axis from left to right, and the
z-axis from bottom to top. Any point in a three-dimensional system requires three coordinates called an
(x,y,z).