PreAlgebra: Functions

​Functions

Vocabulary

Coordinate Plane

a two-dimensional plane formed by the intersection of two number lines. One of these number lines is a horizontal number line called the x-axis and the other is a vertical number line called the y-axis. These two number lines intersect each other perpendicularly and form the coordinate plane

Vocabulary

Ordered Pair

in an ordered pair, information is written in a specific order

in algebra, an ordered pair is the location of a point on a coordinate grid expressed in a specific order (x,y)

Vocabulary

​Relation

A relation is a set of ordered pairs. It shows the relationship between two things.

(1, 3.50), (2, 7.00)...

Vocabulary

​Domain

The set of starting points (the x in the ordered pairs)

x= 1, 2, 3, 4, 5, 6

Vocabulary

Range

The set of ending points (the y in the ordered pairs)

y= 3.50, 7.00, 10.50...