Question

Determine whether the equation defines y as a function of x
Look at pic

Answer 1

Yes

Explanation:

You want to know if y = 3/(x+3) defines y as a function of x.

Function

A function is a relation that gives a single output value for each input value. Here, the relation y=3/(x+3) does exactly that.

Yes, the given equation defines y as a function of x.

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Additional comment

The function is undefined for x=-3, so that value is excluded from the domain, the set of possible inputs.