Q4D. - Algebra 1

Question

For $f\left(x\right)=2x–3$ finding each value.

$f(-1)+f\left(2\right)$

Step-by-Step Solution

Answer

The value $f(-1)+f\left(2\right)$ is –4

Step 1. From question.

The given expression is $f\left(x\right)=2x-3$

Step 2. To find.

We have to find the value of $f(-1)+f\left(2\right)$ if $f\left(x\right)=2x-3$

Step 3. Evaluation.

Putting $x=\left(–1\right)$ and 2 in $f\left(x\right)=2x-3$ and substituting we get,

$\begin{array}{l}f\left(-1\right)+f\left(2\right)=2\left(-1\right)-3+2\left(2\right)-3\\ =-2-3+4-3\\ =-5+1\\ =-4\end{array}$

Hence, the value of $f(-1)+f\left(2\right)$ it $f\left(x\right)=2x-3$ is – 4.