Chapter 8.1, Problem 25PPS

To determine

To calculate: Find the value of function $f\left(-11\right)$ .

Answer to Problem 25PPS

The value of the function $f\left(-11\right)$ is $-42$ .

Explanation of Solution

Given that: Function $f\left(x\right)=3x-9$ , where $x$ is variable.

Calculation:

At the different value of $x$ we get the different value of the function.

Therefore, at $x=-11$ , the value of the function $f\left(x\right)$

  $\Rightarrow f\left(-11\right)=3\times \left(-11\right)-9$

  $\begin{array}{l}\Rightarrow f\left(-11\right)=-3\times 11-9\\ \Rightarrow f\left(-11\right)=-33-9\\ \Rightarrow f\left(-11\right)=-42\end{array}$