Question

Find the domain and range of each relation. Then determine if the relation is a function. D={-2, -1, 3, 5}, R={-7 ,0 ,4} Function?

Answer 1

`D = \{-2,-1,3,5\}` -- Domain

`R = \{-7,0,4\}` -- Range

It is a function

Explanation:

Given

`D = \{-2,-1,3,5\}`

`R = \{-7,0,4\}`

Required

State the domain and range

Determine if the relation is a function

From the question, we have the domain and range as:

`D = \{-2,-1,3,5\}` -- Domain

`R = \{-7,0,4\}` -- Range

Next, is to determine if the relation is a function or not.

Yes, it is a function.

The number of elements in the domain is 4

The number of elements in the range is 3

When the domain has more elements than the range, this is called a many-to-one function, and it is a valid type of function.