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A relation in which there is one and only one second member (range) for each first member (domain)

function table

A table of values in which a unique value is assigned to the second variable (range) for each value of the first variable (domain.)

nonlinear function

A function that does not have a constant rate of change. The graph of a nonlinear function is not a straight line.

quadratic function

A function in the second degree; any function that an be described by an equation of the form y=ax2+bx+c, where a ≠ 0


Any set of ordered pairs


The independent (x) value of a function

linear equation

An equation in two variables whole graph is a line. (The independent variable is limited to the first power.)

linear function

Function in the first degree whose graph is a line

ordered pair (x,y)

A pair of numbers used to locate a point in the coordinate plane. The ordered pair is written in this form (x-coordinate, y-coordinate.)


The value of the dependent variable of a function


A variable commonly used for the domain, independent variable, or the input of a function


A variable commonly used for the range, dependent variable, or the output of a function

coordinate plane

Another name for the coordinate system which is formed by the intersection of two number lines that meet at right angles at their zero points


The set of input values in a function


The set of output values in a function

dependent variable

The variable for the output of a function

independent variable

The variable for the input of a function.

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