2 Answers

Rick Copeland · Answer 1 · 2023-08-04T01:24:37+0000

Answer:

$\textsf{(a)} \quad \boxed{9a-3}$

$\textsf{(b)} \quad \boxed{-9a-3}$

$\textsf{(c)} \quad \boxed{-9a+3}$

Explanation:

Given function:

f(x) = 9x - 3

Part (a)

To find f(a), substitute x = a into the function:

$\implies f(a)=9a-3$

Part (b)

To find f(-a), substitute x = -a into the function:

$\implies f(-a)=-9a-3$

Part (c)

To find -f(a), first substitute x = a into the function:

$\implies f(a)=9a-3$

Then make the function negative:

$\begin{aligned}\implies -f(a)&=-(9a-3)\\&=-9a+3 \end{aligned}$

Pawan Sen · Answer 2 · 2023-08-07T08:05:34+0000

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