Question

What is the domain of the function: {(1, 2); (2, 4); (3, 6); (4, 8)}

Answer 1

The domain is the set that contains all x-values.

Answer 2

Technically, that is not a function, that is a graph. Regardless, the domain is the set of inputs, or set of \(x\) values when we look at the points as \((x,y)\) ordered pairs. Does that give you enough information to figure that out? Just look at the points you are given.

Answer 3

{1, 2, 3, 4} is the domain, I believe.

Answer 4

@yakeyglee Why is it not a function? There is a one-to-one correspondence between x-values and y-values. No x-value is mapped to more than one y-value. It is a function.

Answer 5

yeah that's what i was thinking to