Given f, of, x, equals, minus, 5, x, minus, 1f(x)=−5x−1, find f, of, minus, 1f(−1).

To find \( f(-1) \) for the function \( f(x) = -5x - 1 \), we need to substitute \( -1 \) for \( x \) in the function.

Let's compute it step by step:

1. Substitute \( -1 \) for \( x \): \[ f(-1) = -5(-1) - 1 \]

2. Calculate \( -5(-1) \): \[ -5(-1) = 5 \]

3. Now subtract \( 1 \): \[ f(-1) = 5 - 1 = 4 \]

Thus, \( f(-1) = 4 \).