a number sequence formed by adding a fixed number to each previous term to find the next term

common difference

the difference between consecutive terms of an arithmetic sequence

continuous graph

a graph that is unbroken

a variable that provides the output values of a function

discrete graph

a graph composed of isolated points

the possible values for the input of a relation or function

function notation

a relation that assigns exactly one value in the range to each value in the domain

independent variable

a variable that provides the input values of a function

a value of the independent variable

linear function

a function whose graph is a line

nonlinear function

a function whose graph is not a line or part of a line

a value of the dependent variable

range

the set of all output values for a relation

any set of ordered pairs

an ordered list of numbers that often forms a pattern

term of a sequence

any number in a sequence

vertical line test

a method for determining whether a relation is a function or not