F (X)= X-5

The given function is f(x) = x - 5. This is a linear function, which means that the graph of the function is a straight line.

To find the value of f(x) for a specific value of x, you simply need to substitute that value into the function and compute the result.

For example, if you want to find f(3), you substitute x = 3 into the function:
f(3) = 3 - 5 = -2

Therefore, f(3) equals -2.