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The values of two functions and for certain values of are given in the following table: -2 0 3 -12…
The values of two functions $f$ and $g$ for certain values of $x$ are given in the following table:
| $x$ | -2 | 0 | 3 |
|---|---|---|---|
| $f(x)$ | -12 | -4 | 8 |
| $g(x)$ | 0 | -12 | 30 |
(a)
Find the value of $f^{-1}(8)$?
(b)
Given that $f(x)$ is a linear function, find $f(x)$?
Answer
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From ISC 2025 Practice Mathematics, question 71.