Holt McDougal Algebra 1 Chapter 4 Vocab

arithmetic sequence

A sequence whose successive terms differ by the same nonzero number d, called the common difference.

continuous graph

A graph made up of connected lines or curves.

correlation

A measure of the strength and direction of the relationship between two variables or data sets.

dependent variable

The output of a function; a variable whose value depends on the value of the input, or independent variable.

discrete graph

A graph made up of unconnected points.

domain

The set of all first coordinates (or x-values) of a relation or function.

function

A relation in which every domain value is paired with exactly one range value.

function notation

If x is the independent variable and y is the dependent variable, then the function notation for y is f(x), read "f of x", where f names the function.

function rule

An algebraic expression that defines a function.

independent variable

The input of a function; a variable whose value determines the value of the output, or dependent variable.

negative correlation

Two data sets have a negative correlation if one set of data values increases as the other set decreases.

no correlation

Two data sets have no correlation if there is no relationship between the sets of values.

positive correlation

Two data sets have a positive correlation if both sets of data values increase.

range

???

relation

A set of ordered pairs.

scatter plot

A graph with points plotted to show a possible relationship between two sets of data.

sequence

A list of numbers that often form a pattern.