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Functions Vocab

For 8th Grade Math

TermDefinition
Function A type of relation that assigns exactly one output to each input
Input The independent variable of a relation
Linear Function A function that can be expressed in the form y=mx+b
Many-To-Many Describes a relation in which one input is mapped onto many outputs and one output is related to many inputs.
Many-To-One Describes a relation in which many inputs are mapped onto one output
Mapping Diagram A diagram that pairs a set of inputs with a set of outputs
Nonlinear Function A function whose points do not lie on a line
One-To-Many Describes a relation in which one input is mapped onto many outputs
One-To-One Describes a relation in which each input is mapped onto only one output
Output The dependent variable of a relation
Rate of Change The ratio of changes in two quantities
Relation This pairs a set of inputs with a set of outputs
Vertical Line Test A test to determine whether a graph is a function: If a vertical line intersects a graph at more than one point, then the graph does not represent a function.