뒤로Introduction to Functions definitions
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1/15뒤로Skip to main content뒤로Relation
A connection between X and Y values, represented as ordered pairs, where each input can correspond to one or more outputs. Function
A special type of relation where each input is paired with at most one output, ensuring no input has multiple outputs. Input
An X value in a relation or function, representing the independent variable or starting value in an ordered pair. Output
A Y value in a relation or function, representing the dependent variable or resulting value in an ordered pair. Ordered Pair
A notation (x, y) showing the relationship between an input and its corresponding output on a graph. Vertical Line Test
A graphical method to determine if a graph represents a function by checking if any vertical line crosses more than one point. Domain
The complete set of allowed X values for a relation or function, often found by projecting the graph onto the X-axis. Range
The complete set of allowed Y values for a relation or function, often found by projecting the graph onto the Y-axis. Interval Notation
A concise way to express domain or range using brackets and parentheses to indicate inclusion or exclusion of endpoints. Set Builder Notation
A notation using inequality symbols to describe domain or range, specifying the conditions that elements must satisfy. Bracket
A symbol used in interval notation to indicate that an endpoint is included in the domain or range. Parenthesis
A symbol used in interval notation to indicate that an endpoint is excluded from the domain or range. Union Symbol
A symbol used to connect multiple intervals in domain or range, indicating the combination of separate sets. Squish Strategy
A visual technique where a graph is compressed onto an axis to reveal the domain or range. Open Circle
A graphical marker indicating that a specific value is not included in the domain or range.
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