Is {(0, 2), (3, 8), (–4, –2), (3, –6), (–1, 8), (8, 3)} a function?

no

Step-by-step explanation:

Each of the domain values, x, output a single value, y, in a function.

This set is a not function, because the domain value 3 has two outputs.

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.