Question

How do you find the function values f(-1) given F(x) = -4x?

Answer 1

See a solution process below:

Explanation:

To find `f(-1)` substitute `color(red)(-1)` for each occurrence of `color(red)(x)` in `F(x) = -4x`

`f(color(red)(x)) = -4color(red)(x)` becomes:

`f(color(red)(-1)) = -4 xx color(red)(-1)`

`f(color(red)(-1)) = 4`