### Concept (1)

An important part of understanding functions is understanding their domain and range. Domain and range are all the possible x-values and y-values of the function, and can often be described easily by looking at a graph. In order to grasp domain and range, students must understand how to determine if a relation is a function and interpreting graphs.

### Sample Problems (6)

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Find the Domain and Range:

 x y -1 -4 -2 -8 -3 -12 -4 -16
###### Problem 1
How to find the domain and range from a table.

Find the Domain and Range:

{(1,½),(2,1),(3,3⁄2),(4,2)}
###### Problem 2
How to find the domain and range from a set of ordered pairs.
###### Problem 3
How to find the domain and range from a set of discrete points on a graph.
###### Problem 4
How to find the domain and range from a graphed curve.
###### Problem 5
Finding the domain restrictions on algebraic expressions including radical and rational expressions
###### Problem 6
Identifying the domain and range from graphs, including those with discontinuities and endpoints