From the graph of the function y = x - 1, it is found that f(1) = 0.
This problem is incomplete, but researching it on a search engine, it gives us the graph of the function y = x - 1.
To find the numeric value of a function at x = a, we have to check the value of the horizontal axis when the vertical axis is of a.
For this problem, we want the numeric value at x = 1, hence, when the horizontal axis is of 1, the vertical axis is of 0, hence f(1) = 0.
More can be learned about functions at https://brainly.com/question/24808124
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