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Alg 2: Unit 2 Les 1
Characteristics of Relations and Functions
| Question | Answer |
|---|---|
| Set of ordered pairs represented by a set of points, graph, or an equation | Relation |
| Set of all the x-coordinates in a relation; Independent variable | Domain |
| Set of all y-coordinates in a relation; Dependent variable | Range |
| Relation in which each element of the domain is paired with exactly one element of the range; Set of points in which x values only occur once; Graph where any vertical line will only cross the graph once | Function |
| Individual points; Points not connected | Discrete |
| Line or smooth curve; infinite number of points | Continuous |
| Both the x-values and y-values increase; Intervals in the graph when the function goes up from left to right | Increasing |
| x-values increase and y-values decrease; intervals in the graph when the function goes down from left to right | Decreasing |
| Intersection of the x and y axis; Point (0,0) | Origin |
| Representation of the x and y coordinates; Point (x,y) | Ordered Pair |