Question

If f(x) = −4x − 1, find f(−2).

−9

−7

−10

7

Answer 1

f(x) = -4x - 1
f(-2) = -4(-2) - 1

Answer 2

plug in the -2 instead of X.

Answer 3

\[f(\color{#C00}{x}) = -4(\color{#C00}{x}) - 1 \\ f(\color{#C00}{-1}) = -4(\color{#C00}{-1}) - 1 \\ \vdots\]

Answer 4

Im confused :S

Answer 5

You need to plug in -2 instead of X.
\[-4X -1\]
So with -2 it will be:
\[-4(-2) - 1\]

Answer 6

So the answer is 7.

Answer 7

Correct.