## What is the number called in an ordered pair?

Ordered pairs are often used to represent two variables. When we write (x, y) = (7, – 2), we mean x = 7 and y = – 2. The number which corresponds to the value of x is called the x-coordinate and the number which corresponds to the value of y is called the y-coordinate.

**What is the order of an ordered pair?**

An ordered pair is a composition of the x coordinate (abscissa) and the y coordinate (ordinate), having two values written in a fixed order within parentheses. It helps to locate a point on the Cartesian plane for better visual comprehension. The numeric values in an ordered pair can be integers or fractions.

### What is the first coordinate in an ordered pair?

x-coordinate

The order in which you write x- and y-coordinates in an ordered pair is very important. The x-coordinate always comes first, followed by the y-coordinate. As you can see in the coordinate grid below, the ordered pairs (3,4) and (4,3) are two different points!

**What do you call the first coordinate of relation?**

The domain of the relation is the set of all possible first coordinates. When we graph, we think of the first coordinate in terms of x .

#### How is an ordered pair written?

Ordered Pair in Coordinate Geometry Every point on the coordinate plane is represented by an ordered pair (x, y) where the first element x is called the x-coordinate and the second element y is called the y-coordinate.

**What is 2nd number of an ordered pair?**

An ordered pair is a pair (2) numbers used to locate a point on a coordinate grid. The first number in an ordered pair is the direction you move along the x-axis (left to right/horizontally). The second number in an ordered pair is the direction you move along the y-axis (up and down/vertically).

## What is the term used to describe the first coordinate of a point?

In mathematics, the abscissa (/æbˈsɪs. ə/; plural abscissae or abscissas) and the ordinate are respectively the first and second coordinate of a point in a coordinate system: abscissa. -axis (horizontal) coordinate. ordinate.

**What is the second coordinate of an ordered pair?**

y-coordinate

In an ordered pair, such as (x, y), the first value is called the x-coordinate and the second value is the y-coordinate.

### What is the name of the vertical axis on the coordinate plane?

the y-axis

The horizontal axis in the coordinate plane is called the x-axis. The vertical axis is called the y-axis. The point at which the two axes intersect is called the origin. The origin is at 0 on the x-axis and 0 on the y-axis.

**What is the second number of an ordered pair?**

second coordinate

Example 1: The Order in Ordered Pairs The first number of an ordered pair is called the first coordinate . The second number of an ordered pair is called the second coordinate .

#### What ordered pair names the origin?

(0, 0)

The ordered pair for the origin is (0, 0). The x-coordinate tells how many units from the origin the point is on the x-axis. It is the first number in the ordered pair. The y-coordinate tells how many units from the origin the point is on the y-axis.

**Which term refers to the set of all the possible values of the first coordinates or Abscissas?**

domain

We’ve seen that the domain of a relation or function is the set of all the first coordinates of its ordered pairs.