Question

F(x) = -7x - 1
f() = -8

Answer 1

f(1) = -8

Explanation:

Apparently, you want the argument of the function such that the function value is -8. Fill in the given information and solve for x:

-8 = -7x -1

-7 = -7x . . . . add 1

1 = x . . . . . . . divide by -7

Now, you know that ...

f(1) = -8