How could the graph of an exponential function be used to determine an $a$ value?

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Answer 1 · 2015-04-21T00:22:49

I assume you mean the "A" as in the initial value of $y=Ae^(rt)$ ? $y$ -intercept

The "a" value occurs at $t=0$ , so $e^0=1$ , therefore $y=A$ is $(0,A)$ , the $y$ -intercept.

How could the graph of an exponential function be used to determine an aa value?