# What is the number called in an ordered pair?

What is the number called in an ordered pair?

## 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.