Answer:
The equation f(x) = x - 4 represents a linear function in the form y = mx + b, where m represents the slope of the line.
Comparing the given equation to the standard form, we can see that the coefficient of x is 1. Therefore, the slope of the line represented by the equation f(x) = x - 4 is 1.
The correct answer is O C. 1.
Explanation: