A function is somewhat like a machine. It associates each input and gives out one output.

Here's an example with

**f(x) = x**:

^{2}(x) is the input. We can take 3 as the input, for example.

This will give us an output of 9, gotten from 3^2.

2. What is the relationship between x and y?

x is the input and y is the output.

Therefore, y is reliant on x.

3. Is function a relation?

Yes, it is a relation, between x and y. As mentioned in the previous question, y is reliant on x.

So if x changes, y will also change accordingly.

Done by Dylan and Edwin.

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