Question

For f(x) = -x + 8, which statement is true?

Group of answer choices

f(x + k) = f(x) + k

f(x + k) = f(x) + f(k)

f(x - k) = f(x) - k

f(x - k) = f(x) + k

Answer 1

I think it’s f(x+k) = f(x) + k correct if I’m wrong