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Math Help - Describe the relationship between your solution and this graph

  1. #1
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    Describe the relationship between your solution and this graph

    Hi, I need some help understanding this question.

    x is the amount spent on advertising, in thousands of dollars.
    Equation: P = -5x2 +550x -5000
    The question asks for the x at P(x) = 0. which I have solved
    x1=10 and x2 = 100

    The part I need help with is this:
    Describe the relationship between your solution and this graph of the corresponding relation.
    Describe the relationship between your solution and this graph-graph.png
    y-axis = Profit ($1000)
    x-axis = x ($1000)

    I do not understand what its asking me, the solution I have matches the graph. is this some sort of a trick question?
    Attached Thumbnails Attached Thumbnails Describe the relationship between your solution and this graph-graph.png  
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  2. #2
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    Re: Describe the relationship between your solution and this graph

    Hey SohailS.

    I don't know what its asking either, but you can say that the solution you got matches with the graph of the profit function.

    You should ask your teacher to be more specific in the future.
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  3. #3
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    Re: Describe the relationship between your solution and this graph

    Alright thanks. I was just going to write that as well.
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  4. #4
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    Re: Describe the relationship between your solution and this graph

    Quote Originally Posted by SohailS View Post
    I do not understand what its asking me, the solution I have matches the graph. is this some sort of a trick question?
    I think the relationship is that the graph of P(x) intersects the x-axis at the points whose first coordinates are the numbers you found, i.e., you found the x-intercepts of P(x).

    I agree that the question is vague.
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