Is relation q a function? Is the inverse of relation q a function?

Relation q is not a function. The inverse of relation q is a function.
Relation q is not a function. The inverse of relation q is not a function.
Relation q is a function. The inverse of relation q is a function.
Relation q is a function. The inverse of relation q is not a function.

Question

Is relation q a function? Is the inverse of relation q a function?

Relation q is not a function. The inverse of relation q is a function.
Relation q is not a function. The inverse of relation q is not a function.
Relation q is a function. The inverse of relation q is a function.
Relation q is a function. The inverse of relation q is not a function.

anonymous · Answer

And there is a chart that looks like this. |dw:1356914296002:dw|