What is the domain of #g(x) = 3 / (9 - 4x)#?

2 Answers
Konstantinos Michailidis
Sep 24, 2015

Refer to explanation

Explanation:

We need to find the values that nullify the denominator and exclude them

hence we have that

#9-4x=0=>x=9/4#

So the domain is #R-{9/4}#

Gió
Sep 24, 2015

Have a look.

Explanation:

The domain is the set of #x# values that your function can accept:
In this case the only value NOT allowed is the one that makes the denominator equal to zero, which is #x=9/4#.
The domain will then be all the real #x# except #x=9/4#.

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