f is not an equation
f(x) = 0 is an equation.
It is possible for a relation to have such domain and range and not be a function. For example,
y^2 = |⌊x⌋| is such a relation.
Maybe you need to provide more context?
An equation, f, has a domain of all whole numbers and has a range of all real numbers. Does the equation represent a function? Explain why or why not.
2 answers
I think it means is a function able to have a domain of all whole numbers and also a range of all real numbers at the same time. I don't think it's talking about an equation in specific just in general.