SOLUTION: Find the domain of the function. f(x)=3/x+9 Not sure what to do.

Question 1191796: Find the domain of the function.
f(x)=3/x+9
Not sure what to do.

Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
the domain is all real values of x that lead to a real value of f(x).
you have f(x) = 3/(x+9)
since (x+9) is in the denominator, then the denominator will be equal to 0 when x = -9.
the value of f(x) = 3/(x+9) is not defined when the denominator is equal to 0.
the domain of the function is therefore all values of x except at x = -9.

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