function rule
A mapping. It need not be a function.
There need not be any relationship.
A function.
cost or input
Relation
A mapping. It need not be a function.
There need not be any relationship.
pie
What is the relation ship between total fixed cost and output?
A function.
cost or input
is unknown
output and exports
Design
Relation
The output of the expression 11 5 will be 6. This is because 11 - 5 = 6.
Function