Question

Create a table, map, or graph of a function and a non-function (one type for each).
Create any numbers

Answer 1

Function (table)
Input x | f(x)
-------|-----
1 | 2
2 | 4
3 | 6
4 | 8

This is a function because each input x has exactly one output f(x) (here f(x)=2x).

Non-function (mapping diagram)
Domain: {1, 2, 3}
Codomain: {10, 20, 30}

Mapping (arrows):
1 → 10
1 → 20
2 → 20
3 → 30

This is not a function because domain element 1 maps to two different outputs (10 and 20), so an input does not have a single, well-defined output.