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    Hi, I'm currently doing the 2011 paper 1 for revision and I have came across a question, which I'm not sure about. I would really appreciate your help.

    This is the paper
    http://pastpapers.download.wjec.co.u...09.pdfIt's 14c which I'm stuck with, I can't understand why the 'appropriate line' should be at y=10, but after that would be okay with solving it. Does anyone know why the line has to be drawn at y=10?Really appreciate it, thank you.
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    (Original post by emily380)
    Hi, I'm currently doing the 2011 paper 1 for revision and I have came across a question, which I'm not sure about. I would really appreciate your help.

    This is the paper
    http://pastpapers.download.wjec.co.u...09.pdfIt's 14c which I'm stuck with, I can't understand why the 'appropriate line' should be at y=10, but after that would be okay with solving it. Does anyone know why the line has to be drawn at y=10?Really appreciate it, thank you.
    I'm getting an Error 404, check the link or post the question
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    (Original post by Andy98)
    I'm getting an Error 404, check the link or post the question
    Does this link work?

    http://pastpapers.download.wjec.co.uk/a11-0185-09.pdf
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    Yes, I'll just find 14c then
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    (Original post by Andy98)
    Yes, I'll just find 14c then
    Thank you so much
    I'm not sure if it's on my syllabus anymore but I guess I'd better see what I'm getting wrong just in case
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    (Original post by emily380)
    Hi, I'm currently doing the 2011 paper 1 for revision and I have came across a question, which I'm not sure about. I would really appreciate your help.

    This is the paper
    http://pastpapers.download.wjec.co.u...09.pdfIt's 14c which I'm stuck with, I can't understand why the 'appropriate line' should be at y=10, but after that would be okay with solving it. Does anyone know why the line has to be drawn at y=10?Really appreciate it, thank you.
    Ahhh yes, that makes sense now. Look at the difference between the two equations. You'll notice x^3 - 3x^2 - 13x + 5 is 10 less than the original expression. It could be written as x^3 - 3x^2 - 13x + 15 = 10 which would represent the intersections between the graphs y=x^3 - 3x^2 - 13x + 5 and y=10
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    (Original post by Andy98)
    Ahhh yes, that makes sense now. Look at the difference between the two equations. You'll notice x^3 - 3x^2 - 13x + 5 is 10 less than the original expression. It could be written as x^3 - 3x^2 - 13x + 15 = 10 which would represent the intersections between the graphs y=x^3 - 3x^2 - 13x + 5 and y=10
    Thank you so much! I didn't notice that the equations were actually different! Makes complete sense now, thank you really appreciate it
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    (Original post by emily380)
    Thank you so much! I didn't notice that the equations were actually different! Makes complete sense now, thank you really appreciate it
    Yeah, it is a subtle difference.
 
 
 
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