Given f, of, x, equals, minus, x, minus, 1f(x)=−x−1, find f, of, 1f(1).

To find \( f(1) \) given the function \( f(x) = -x - 1 \), we can substitute \( x = 1 \) into the equation.

\[ f(1) = -1 - 1 \]

Calculating this:

\[ f(1) = -2 \]

Therefore, \( f(1) = -2 \).