What is "if f(x) = − 5?

If the function f(x) is defined as f(x) = -5, this means that for any input value of x, the output value of the function f(x) will always be -5. This can be visualized as a horizontal line at y = -5 on a graph.

In other words, no matter what value of x you plug into the function, the result will always be -5. This function is considered to be a constant function, meaning that it does not change in value based on the input.

The graph of f(x) = -5 is a straight line parallel to the x-axis at y = -5. It does not have any slope or variation in value across the x-axis.

This function is an example of a simple and straightforward constant function with a fixed output value of -5 for all input values of x.