A function $f$ is defined by $f (x) = 2 x - 5$ . Write down the values of
(i) $f (0)$
(ii) $f (7)$
(iii) $f (- 3)$

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Solution

$f$ is given by $f (x) = 2 x - 5$
Then, we have
(i) $f (0) = 2 (0) - 5 = - 5$
(ii) $f (7) = 2 (7) - 5 = 9$
(iii) $f (- 3) = 2 (- 3) - 5 = - 11$

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Similar questions

A function f is defined by f(x) = 2x - 5. Write down the values of:

(i) f(0) (ii) f(7) (iii) f(-3)

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Let $f : R \to R$ be the function defined by $f (x) = 2 x - 3, \forall x \in R$ . Write $f^{- 1}$ .

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