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Chapter 2: Q62. (page 74)

Find each value if $f (x) = 3 x - 4$
$f (3)$

Short Answer

Expert verified

The required solution is $f (3) = 5$ .

Step by step solution

– State the concept

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

– List the given data

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

– Compute the required value

Put $x = 3$ in $f (x) = 3 x - 4$ to get,

$\begin{matrix} f (3) = 3 (3) - 4 \\ = 9 - 4 \\ = 5 \end{matrix}$

So, $f (3) = 5$ .

This is the required solution.

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Find each value if $f (x) = 5 x - 9$

$f (y)$

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Find each value if fx=3x-4f3

Short Answer

Step by step solution

– State the concept

– List the given data

– Compute the required value

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Find each value if $f (x) = 3 x - 4$
$f (3)$