SOLUTION: FIND THE DOMAIN OF THE FUNCTION f(x)= 4/ square root of x - 9 "f(x) equals 4 divided by the square root of x - 9" The answer is x

SOLUTION: FIND THE DOMAIN OF THE FUNCTION f(x)= 4/ square root of x - 9 "f(x) equals 4 divided by the square root of x - 9" The answer is x > 9. But I keep getting the answer- x is

Question 369593: FIND THE DOMAIN OF THE FUNCTION
f(x)= 4/ square root of x - 9
"f(x) equals 4 divided by the square root of x - 9"
The answer is x > 9.
But I keep getting the answer- x is greater than OR EQUAL to 9.
What am i doing wrong?? HELP PLEASE.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
The domain of the function is all the x values for which is defined.
The square root function is defined as long as the argument is not negative.

Division by zero is also undefined so the x value when the denominator equals zero is not in the domain.

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So both of those must hold: x must be greater than or equal to 9 and x cannot equal 9, so that leaves that
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Domain: or in interval notation, (,)
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