# Coordinates Of A Point

The coordinates of a point are a pair of numbers that define its exact location on a two-dimensional plane. We already know that the coordinate plane has two axes at right angles to each other, called the x and y axis. The coordinates of a given point represent how far along each axis the point is located.

The coordinates are written as an "ordered pair".

The letter P is simply the name of the point and is used to distinguish it from others. The two numbers in parentheses are the x and y coordinate of the point.

1. The first number (x) specifies how far along the x (horizontal) axis the point is.

2. The second is the y coordinate and specifies how far up or down the y axis to go.

The sign of the coordinate is important. A positive number means to go to the right (x) or up (y). Negative numbers mean to go left on x axis or down to the y axis

Each point on a number line is assigned a number. In the same way, each point in a plane is assigned a pair of numbers.

The x‐axis and y‐axis separate the coordinate plane into four regions called quadrants.  