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# Chapter 2

### Linear Functions

TermDefinition
Sequence a pattern involving an ordered arrangement of numbers, geometrical figures, letters, or other objects
Term an individual number, figure, or letter in a sequence
Ellipsis a shortcut used to list a sequence
Discrete Graph a graph of isolated points
Continuous Graph a graph with no breaks in it
Linear Graph a graph that is a line or a series of collinear points
Collinear Points points that lie in the same straight line
Non-Linear Graph a graph that is not a line
Mapping represents two sets of objects or items
Set a collection of numbers, geometric figures, letters, or other objects that have some characteristic in common
Function maps each input to one and only one output
Input the first coordinate of an ordered pair in a relation
Output the second coordinate of an ordered pair in a relation
Domain the set of all the inputs of a function
Range the set of all the outputs of a function
Scatter Plot a graph of a collection of ordered pairs that allows an exploration of the relationship between the points
Vertical Line Test a visual method used to determine whether a relation represented as a graph is a function
Absolute Value Function a function that can be written in the form f(x) = |x|
Square or Quadratic Function a function that can be written in the form f(x) = ax^2 + bx + c, where a, b, and c are any numbers and a does not equal zero
Cube or Cubic Function a function that can be written in the form f(x) = ax^3 +bx^2 + cx + d
Created by: cbaumler