Answer:
it is not function
Step-by-step 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
here u go
16 /5 =3 and 1 over 53 1 /5=3.2
profit=sp-cp
=365-320
=45#
(-2,1)
Here maybe this image might help.
