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Mathematics 17 Online
OpenStudy (anonymous):

F(x) = 3x - 8/4x + 20

hero (hero):

Instructions....?

OpenStudy (anonymous):

Find the domain of the following rational function

OpenStudy (zale101):

what's the domain?

hero (hero):

So I assume this is what you have: \[f(x) = \frac{3x - 8}{4x + 20}\]

OpenStudy (anonymous):

Yes

hero (hero):

@EvaH47, what are the restrictions on the domain for this function? In other words, what can \(x\) NOT equal?

OpenStudy (anonymous):

Not sure. real numbers?

OpenStudy (zale101):

x cannot equal to zero

OpenStudy (anonymous):

Is that the answer?

OpenStudy (zale101):

yes that's the question, where is the denominator in your question?

OpenStudy (zale101):

In real numbers, is when u limit the domain by let's say 2/0 therefore the denominator cannot be zero

OpenStudy (anonymous):

The denominator is the 4x +20. I am to simplify by dividing

OpenStudy (anonymous):

I am so lost.

OpenStudy (zale101):

no, the equation supposed to look like 4x+20 = 0 and from there, solve x

OpenStudy (zale101):

we don't want the division to be zero

OpenStudy (anonymous):

ok

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