The value of the function is f(−1)=6.
A function is defined as a relation between a set of inputs having one output each.
In this problem, we are given a function f(x) = x+7 and we are asked to evaluate f(-1)
Recall that f(x) = y.
When we evaluate functions, we substitute the given x-value to find the corresponding y-value of the functionWhen evaluating functions using function notation the number in place of the "x" in "f(x)" is the number that you plug into the x of your function.
So, if f(x)=x+7 then
f(−1)=(−1)+7
Therefore, f(−1)=6
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