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Math Help - Math Help Please

  1. #1
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    Math Help Please

    Can someone please help me out with this question:

    Using the graph, find the instantaneous rate of change at:


    a) x = -2
    b) x = -1
    c) x = 3


    I only need to know how to do one of them, so I can use the same formula/technique for b & c. The problem is that I can't post the graph on here so I just need the technique on how to find it.


    I have to put this as geometer sketchpad because that's where the file comes from. I'm given a graph and 2 points which I can move... I'm not sure how to find instananeous rate though... Can anyone help me out?


    Thanks
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  2. #2
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    Quote Originally Posted by agent2421 View Post
    Can someone please help me out with this question:

    Using the graph, find the instantaneous rate of change at:


    a) x = -2
    b) x = -1
    c) x = 3


    I only need to know how to do one of them, so I can use the same formula/technique for b & c. The problem is that I can't post the graph on here so I just need the technique on how to find it.


    I have to put this as geometer sketchpad because that's where the file comes from. I'm given a graph and 2 points which I can move... I'm not sure how to find instananeous rate though... Can anyone help me out?


    Thanks
    a) Draw the tangent at x = -2. Estimate its gradient.
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