Question

evaluate the function f (x) = -2x - 8 when x = -3.

Answer 1

when x = -3, f(x) = -2

Here, we want to evaluate the function given an x value

What we will do here is to substitute -3 for x

We have this as follows;

$\begin{gathered} f(-3)\text{ = -2(-3)-8} \\ f(-3)\text{ = 6-8} \\ f(-3)\text{ = -2} \end{gathered}$