Question

Find each value if $\mathbf{f}\left(\mathbf{x}\right)=\mathbf{3}\mathbf{x}-\mathbf{4}$

$\mathbf{f}\left(\mathbf{a}\right)$

Short answer

The required solution is $f\left(a\right)=3a-4$.

Step-by-step solution

– State the concept

The value of $f\left(a\right)$ is given by putting $x=a$ in the expression for $f\left(x\right)$.

– List the given data

The given function is $f\left(x\right)=3x-4$ and the objective is to find $f\left(a\right)$.

– Compute the required value

Put $x=a$ in $f\left(x\right)=3x-4$ to get,

$\begin{array}{c}f\left(a\right)=3\left(a\right)-4\\ =3a-4\end{array}$

So, $f\left(a\right)=3a-4$.

This is the required solution.