Question

What is the domain and range of {(1,4) (0,-2) (2,3) (-1,4) (-3,0)?

Answer 1

`"Domain={-3,-1,0,1,2}, &, Range="{-2,0,3,4}`.

Explanation:

When a Relation or Function , say, `f`, is defined as a Set of

Ordered Pairs, i.e., `f={(x,y)}`., its Domain and Range ,

denoted by `D and R` resp., are the Sets , defined by,

`D={ x : (x,y) in f}, and, R={y : (x,y) in f}`.

Clearly, in our case,

`D={-3,-1,0,1,2}, &, R={-2,0,3,4}`.