A mathematical sentence that contains an equal sign. Equations are solved using inverse operations to isolate a variable.

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Zero Slope

Front

When the change in the output is zero.
Zero divided by any number is still zero.

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undefined

Front

No solution or something we CANNOT do in mathematics. An example is division by zero.
The slope of a vertical line is undefined because the change in the input would be zero and we cannot divide by zero.

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quadrants

Front

Four regions into which a coordinate plane is divided by the x-axis and the y-axis.

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slope

Front

A RATIO comparing the change in output over the change in input of a line.

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ordered pair

Front

A pair of numbers used to locate a point on the coordinate plane. (x , y) Also called a coordinate.

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y-intercept

Front

Algebraically, the value of the output when the input is zero (0, y).
Graphically, the point where a graph crosses the y-axis.

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graph

Front

A collection of ordered pairs that show a relationship between two things.

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domain

Front

All possible inputs of a function.

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vertical line

Front

A line whose slope is undefined.
Vertical lines do NOT represent functions.
Equation: x = some number

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x-intercept

Front

Algebraically, the value of the input when the output is zero (x, 0).
Graphically, the point where a graph crosses the x-axis.
Also called roots, zeros or solutions.

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variable

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A letter or symbol that represents a number.

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constant

Front

A value that does not change.

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linear equation

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An equation in two variables whose graph in a coordinate plane is a straight line.

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evaluate

Front

To find the output of a function for a given input.

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standard form

Front

Form for a linear equation: Ax + By = C

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coefficient

Front

A number multiplied by a variable in an algebraic expression or equation.

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slope-intercept form

Front

Form for a linear equation: y = mx + b
"m" represents the slope of the line
"b" represents the y-intercept of the line