Inactive Tutor answered • 09/12/14
Tutor
New to Wyzant
The domain for four of the functions is all real numbers because you can put in a value of x that is zero, any positive number or any negative number.
One of the functions does not have a domain of all real numbers because there are values of x that are not permitted.
Based on this information, do you know which one it is?
Inactive Tutor
A constant function is like y = 2 which is a horizontal line and x can be anything as long as y is 2. The answer is the square root function. We can't take the square root of a negative number
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09/12/14
Mari S.
Ah!I understand what you mean now, thanks for the help!
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09/12/14
Mari S.
09/12/14