Function Intersection 38223C
1. The problem asks to find the $x$ value where the two functions $f(x) = x + 3$ and $g(x) = -x - 5$ are equal.
2. To find the solution, set the two functions equal to each other:
$$x + 3 = -x - 5$$
3. Add $x$ to both sides to get all $x$ terms on one side:
$$x + x + 3 = -5$$
$$2x + 3 = -5$$
4. Subtract 3 from both sides:
$$2x = -5 - 3$$
$$2x = -8$$
5. Divide both sides by 2 to solve for $x$:
$$x = \frac{-8}{2} = -4$$
6. Therefore, the $x$ value where $f(x)$ and $g(x)$ intersect is $x = -4$.
7. To verify, substitute $x = -4$ into both functions:
$$f(-4) = -4 + 3 = -1$$
$$g(-4) = -(-4) - 5 = 4 - 5 = -1$$
Both equal $-1$, confirming the solution.