Question

Decide whether the information defines a function . If it does, state the domain of the function .

Answer 1

We can remember that a function is a relation between two variables in such a way that the independent variable has EXACTLY one dependent variable.

In this case, we have that:

a ---> 0

b ---> 1

c ---> 0

d ---> 1

We do not find that the variable has other value. It has only a value of 0.

It does not matter that the other values have the same output.

Thus, this information 'tells us' that the relation is a function.

Additionally, the domain of the function, in this case, are all the elements in the input row, that is:

Domain: {a, b, c, d}