QuestionGraph of $f$
9. The graph of $f$ is shown above. Which of the following could be the equation for $f$ ? (A) $f(x)=2 \log _{4}(x)$ (B) $f(x)=-2 \log _{4}(x)$ (C) $f(x)=-2\left(\frac{1}{2}\right)^{x}$ (D) $f(x)=-2(3)^{x}$

Studdy Solution
The correct option that represents an exponential decay function is Option (C) $f(x) = -2\left(\frac{1}{2}\right)^x$ .
The equation that could represent the graph is:
$\boxed{-2\left(\frac{1}{2}\right)^x}$

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