An efficient and effective way write all functions in mathematics. To write a rule in function notation, you use the symbol f(x) in place of y.

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Discrete Data

Front

Data that can only take certain values (opposite of continuous data).
Example: The number of students in a class (you can't have half a student).

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Inequality

Front

A statement that compares two quantities using <, >, ≤,≥, or ≠

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Range

Front

The set of all possible output values (y) of a functions.

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Constant

Front

A value that does not change.

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Equal Sign

Front

Indicates that two values or expressions are equivalent.

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Origin

Front

The point with the x- and y-axes meet. The coordinate (0,0).

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Independent Variable

Front

The input or x-value.

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Dependent Variable

Front

The output or y-value. This variable depends on the input.

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Function

Front

A relationship in which each input (or x) is paired with exactly one output (or y). We can represent functions verbally, with tables, by sketching graphs, or by writing equations.

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Continuous Data

Front

Data that can take any value (opposite of discrete data).
Example: People's heights could be any value (within the range of human heights), not just certain fixed heights.

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Coefficient

Front

A number multiplied by a variable in an algebraic expression.

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Solve

Front

The process of isolating a variable using inverse operations.

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y-axis

Front

The vertical number line in a coordinate plane.

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Ordered Pair

Front

A pair of numbers that can be used to locate a point on a Cartesian plane. These numbers are also called coordinates.

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Coordinate Plane

Front

A plane that is divided into four quadrants by a horizontal line called the x-axis and a vertical line called the y-axis.

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x-axis

Front

The horizontal number line in a coordinate plane.

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Quadrant

Front

One of four sections into which the coordinate plane is divided.

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Equation

Front

A mathematical statement that two expressions are equal.

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Graph

Front

Collection of input and output values (ordered pairs) that form a line or curve on the coordinate plane.

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Table of Values

Front

A chart showing two sets of related numbers.

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Domain

Front

The set of all possible input values (x) of a function.

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Expression

Front

A mathematical phrase that contains operations, numbers, and/or variables, but NO equal sign.

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Evaluate

Front

To find the value of the output for a given input by substituting the input and simplifying.

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Variable

Front

A letter or symbol used to represent a number.

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Exponent (Power)

Front

A number that indicates how many times to multiply a base by itself.