To find $f(1)$ for the function $f(x) = -x - 1$, substitute $x = 1$ into the function:

$f(1) = -(1) - 1 = -1 - 1 = -2$

Thus, $f(1) = -2$.

Would you like more details or have any other questions?

Here are 5 related questions you might find helpful:

1. What is the domain of the function $f(x) = -x - 1$?
2. How do you graph the function $f(x) = -x - 1$?
3. What is the slope and y-intercept of $f(x) = -x - 1$?
4. How do you find $f(x)$ for any given $x$ value?
5. How does this function compare to $f(x) = x + 1$?

Tip: When working with linear functions, remember that the coefficient of $x$ represents the slope, and the constant term represents the y-intercept.