Chapter 8.1, Problem 19PPS

To determine

To calculate: Find the value of function $f\left(9\right)$ .

Answer to Problem 19PPS

The value of the function $f\left(9\right)$ is 18.

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 $x=9$ , the value of the function $f\left(x\right)$

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

  $\begin{array}{l}\Rightarrow f\left(9\right)=3\times 9-9\\ \Rightarrow f\left(9\right)=18\end{array}$