1. **State the problem:** We are given the linear function $g(x) = -x - 4$ and need to find the value of $g(-2)$. 2. **Formula used:** To evaluate a function at a given input, substitute the input value into the function expression. Here, substitute $x = -2$ into $g(x)$. 3. **Substitution:** $$g(-2) = -(-2) - 4$$ 4. **Simplify:** $$g(-2) = 2 - 4$$ 5. **Calculate:** $$g(-2) = -2$$ 6. **Answer:** The value of the function $g(x)$ at $x = -2$ is $-2$.