The Cartesian coordinates in the plane are specified in terms of the x -coordinates axis and the y -coordinate axis, as illustrated in the below figure. The origin is the intersection of the x and y-axes. The Cartesian coordinates of a point in the plane are written as (x, y). The first number x is called the x -coordinate (or x -component), as it is the signed distance from the origin in the direction along the x …show more content…
This new axis is conventionally referred to as the z-axis and the coordinate may lie anywhere in the interval . An ordered triple in three-dimensional Cartesian coordinates is often called a point or a 3-vector (Stover, C. & Weisstein, E. W, N/A). The three axes intersect at the point called the origin. You can imagine the origin being the point where the walls in the corner of a room meet the floor. The x -axis is the horizontal line alonsg which the wall to your left and the floor intersect. The y -axis is the horizontal line along which the wall to your right and the floor intersect. The z -axis is the vertical line along which the walls intersect. The parts of the lines that you see while standing in the room are the positive portion of each of the axes, illustrated by the halves of the each axis labeled by x, y, and z in the below applet. The negative part of these axes would be the continuations of the lines outside of the room, illustrated by the unlabeled halves of each axis, …show more content…
The three numbers, or coordinates, specify the signed distance from the origin along the x, y, and z-axes, respectively. They can be visualized by forming the box with edges parallel to the coordinate axis and opposite corners at the origin and the given point, as illustrated in the following