Find the Domain y=3x+9

Problem

y=3*x+9

Solution

1. Identify the type of function. The given equation y=3*x+9 is a linear function, which is a specific type of polynomial function.

2. Determine if there are any restrictions. For a function to have a restricted domain, there must be operations that are undefined for certain real numbers, such as division by zero or taking the even root of a negative number.

3. Analyze the expression 3*x+9 Since there are no denominators containing variables and no radical signs, the variable x can take on any real number value.

4. Conclude the domain. The domain of any polynomial function is the set of all real numbers.

Final Answer

Domain: *(−∞,∞)

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