Chapter 8.7, Problem 11E

To determine

To find:

The value of $f(x)$ , when $x=-1$ .

Answer to Problem 11E

Thevalue of $f(x)$ , when $x=-1$ would be $4$ .

Explanation of Solution

Given:

Two functions: $f(x)=-3x+1$ and $g(x)=10x-4$

Calculation:

To find the value of $f(x)$ , when $x=-1$ , we will substitute $x=-1$ in function $f(x)$ as shown below:

  $\begin{array}{l}f(x)=-3x+1\left(\text{Given function}\right)\\ f(-1)=-3(-1)+1\left(\text{Substituting }x=-1\right)\\ f(-1)=3+1\\ f(-1)=4\end{array}$

Therefore, thevalue of $f(x)$ , when $x=-1$ would be $4$ .