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12-44.
  1. State the domain and range for each graph below. Then state whether or not it is a function. Homework Help ✎

    a.

    graph

    b.

    graph

    c.

    graph

    d.

    graph

The domain is the set of all x-values of a relation or function.
The range is the set of all y-values of a relation or function.
For a relation to be a function, each x-value must correspond to only one y-value.

Domain: −3 ≤ x ≤ 3
Range: −3 ≤ y ≤ 3
Not a Function

Domain: −3 ≤ x ≤ 4
Find the range.
Is this a function?

Find the domain.
Range: −∞ ≤ y ≤ 4
Is this a function?

This is a function.
Find the domain and range.