SOLUTION: What values are excluded from the domain of the function? (Separate multiple answers with commas. Enter NONE if there are none.)
F(x) = (3 x - 9)/(x - 8)
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Question 263387: What values are excluded from the domain of the function? (Separate multiple answers with commas. Enter NONE if there are none.)
F(x) = (3 x - 9)/(x - 8)
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
To determine the domain of any function, we ask 2 questions
(1) is the variable in a square root of any type?
if "yes" set the stuff under the root >= 0 and solve for x.
if "no" go to question 2.
(2) is the variable information in the denominator?
if "yes" set the denominator stuff not = 0 and solve for x.
if "no" then you say "all reals"
-----
Using these questions on the given problem., we get
(1) NO
(2) YES
so
solving for x, we get
x = 8.
This means we cannot use x = 8 as a domain number.
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