Relations and Functions Dictionary

The y value of an ordered pair. It represents the vertical placement of the point

A set of numbers, or coordinates written in the form (x,y)

The result of substituting a value into a function

A function graphed with a line or smooth curve

Formed by the intersection of two number lines, the horizontal axis and the vertical axis

A relation in which each element of the domain is paired with exactly one element of the range. (Hint: The x values do not repeat)

If any vertical line passes through the graph of a relation no more than once, then it is a fuction

Illustrates how each element of the domain is paired with an element of the range

A set of ordered pairs. {(-1,4), (0,6), (5,2)}

A graph that consists of points that are not connected.

A way to name a function that is defined by an equation. (Instead of y=mx+b, replace "y" with "f(x)")

The set of x values of the ordered pairs in a relation

The point at which the x and y axis intersect on the coordinate plane. (0,0)

The x-value of an ordered pair. It represents the horizontal placement of the point.

The x-intercepts of the graph of a function. The points for which f(x) = 0

The set of y values of the ordered pairs in a relation

The four regions into which the x and y axis separate the coordinate plane

The vertical axis on a coordinate plane

The horizontal axis on a coordinate plane.

A value substituted for an x-value in a function