Find the Domain y=-2x+9

Problem

y=−2*x+9

Solution

1. Identify the type of function. The given equation y=−2*x+9 is a linear function, which is a specific type of polynomial function.

2. Check for restrictions. Polynomial functions do not have denominators containing variables (which could lead to division by zero) or even-indexed roots containing variables (which could lead to non-real numbers).

3. Determine the set of all possible input values for x Since there are no mathematical operations in the expression that restrict the value of x any real number can be substituted into the equation.

4. Express the domain in interval notation. The set of all real numbers is represented as (−∞,∞)

Final Answer

Domain: *(−∞,∞)

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