The Domain of a relation is the set of all possible values which can be used for the input of the independent variable (x).

The Range of a relation is the set of all possible values of the output of the dependent variable (y).

The Domain and Range can be found by listing the inputs and outputs.

Ordered pairs

(1,2), (0,5), (3,8), (5,9) (-3,2)

Domain: {-3, 0, 1, 3, 5}

Range: {2, 5, 8, 9}

An Arrow Diagram

D: {2, 4, 6, 8}

R: {1, 3, 5}

Graph

D: {-1, 0, 3, 4}

R: {5, 0, 2, 1}

D: {x E R}

R: {y E R}

D:  {x|-4 ≤ x ≤4, x ∈ R}

D: [-4, 4]

R: {y|0 ≤ y ≤ 5, y ∈ R}

R: [0, 5]