Final answer:
The question lacks necessary details to find the range and determine if the relation is a function. We need specifics like ordered pairs or a rule of the relation. An example of a function is given for illustrative purposes.
Step-by-step explanation:
To find the range of the given relation and determine whether it is a function, we need to look at the sets of numbers provided. However, the question seems to be missing vital information about the relations themselves, such as ordered pairs or a rule defining the relation. Without this, we cannot determine the range or whether any of the sets form a function.
In a general example, consider the function f(x) where 0 ≤ x ≤ 20. The graph of f(x) is described as a horizontal line. Since it's stated that f(x) is restricted to between x = 0 and x = 20, we can conclude that the range of this function is simply the constant value that the horizontal line represents, and since each input x has exactly one output, this is indeed a function.
For a linear equation, this is any equation of the form y = mx + b, where m and b are constants.