Question

Determine if it is a function, find the domain and the range.

{(9,−3),(4,−2),(1,−1), (0,0),(1,1),(4,2),(9,3)}

Answer 1

it is not function

Explanation:

because,

first of all,what do mean function

A function is a relation in which each element of the domain corresponds to exactly one

element of the range.

based on this description

Since the domain element 1 is assigned to two different values in the range, -1 and 1, so that it is

not a function