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Definition of Functions

If fx = 3x-...

Question

If $f (x) = 3 x - 7$ , then what is the value of $f (2)$ ?

A

- 1

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B

2

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C

3

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D

- 2

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Solution

The correct option is A $- 1$
Given,
$f (x) = 3 x - 7$
Putting $2$ in place of $x$ , we get
$f (2) = 3 \times 2 - 7$
$f (2) = 6 - 7 = - 1$

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