Question

Answer the following:

Identify the following relation is the function? If it is a function determine its domain and range.

{(0, 0), (1, 1), (1, –1), (4, 2), (4, –2), (9, 3), (9, –3), (16, 4), (16, –4)}

Answer 1

{(0, 0), (1, 1), (1, –1), (4, 2), (4, –2), (9, 3), (9, –3), (16, 4), (16, –4)}

∵ (1, 1), (1, –1) ∈ the relation

∴ Given relation is not the function.

As the element 1 of domain has not been assigned a unique element of co-domain.