Algebra

How do I identify an exponential growth/decay function on a graph? I'm assuming that if the curve moves from left to right, upwards, it is growth, and if it moves left to right, downwards, then it is decay. Please tell me whether this reasoning is right or wrong.

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  1. basically correct

    Though that may not guarantee that the curve is exponential. Given that assumption, your reasoning is correct.

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    posted by Steve
  2. yes, you are correct

    example of exponential growth graph
    http://www.wolframalpha.com/input/?i=plot+y+%3D+2%5Ex

    example of exponential decay graph
    http://www.wolframalpha.com/input/?i=plot+y+%3D+%281%2F2%29%5Ex

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    posted by Reiny
  3. Thanks!

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