Find the Domain y=-3x-9

Problem

y=−3*x−9

Solution

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

2. Analyze the expression for any restrictions. In mathematics, restrictions on the domain typically occur when there is a denominator (which cannot be zero) or an even-indexed root (where the radicand must be non-negative).

3. Determine if any such restrictions exist for this function. Since there are no fractions involving x in the denominator and no square roots, the variable x can take on any real number value.

4. State the domain in interval notation. Because x can be any real number, the domain extends from negative infinity to positive infinity.

Final Answer

Domain: *(−∞,∞)

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