Question

If f(x) = -3x - 8, find f(-1) A.f(-1) = -5 B f(-1) = -10 C.f(-1) = 5

Answer 1

We can find the value of f(-1) by replacing the value of x with (-1) in the equation:

$\begin{gathered} f(x)=-3x-8 \\ f(-1)=-3(-1)-8=3-8=-5 \end{gathered}$

Answer: f(-1) = -5 [option A].