Question

{ (-2, 1), (-1,0).(0, 1), (1, 2) }

What is the Domain and Range.
Is it a lagoon or function? And why?

Answer 1

• Domain: {-2,-1,0,1,}
• Range:{0,1,2}
• It is a function

Explanation:

The function is defined with ordered pairs:

{(-2, 1), (-1,0), (0, 1), (1, 2) }

The domain in this case is the set of all the x-coordinates.

Domain: {-2,-1,0,1,}

The range in this case refers to the set of all the y-coordinates.

Range:{0,1,2}

Note that in listing the elements of a set, we list distinct entries only.

The given relation is a function because there is no x-coordinate that appears more than once in the ordered pairs with different y-coordinates.