CPM Homework Help : AC Problem 11-101

What number is not part of the domain of $f ( x ) = \frac { 3 } { x + 5 }$ ? How can you tell?

Hint:

What x-value(s) would not produce a possible output (y-value)?

Hint:

We cannot divide by $0$ . Therefore, what value of $x$ will make the denominator $0$ ?

Answer:

$x$ cannot equal $−5.$