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    Stuck on question 5 on https://7c95ed1f832973eac0c6e1a52b08...20C3%20OCR.pdf

    I have to find values to do with the graph of f(x) and I can't seem to figure out the equation from the graph and there's nothing in the C3 syllabus about something like this
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    (Original post by JW22)
    Stuck on question 5 on https://7c95ed1f832973eac0c6e1a52b08...20C3%20OCR.pdf

    I have to find values to do with the graph of f(x) and I can't seem to figure out the equation from the graph and there's nothing in the C3 syllabus about something like this
    You dont even need to use the graph, you are told to find ff(6), to work out f(6) look at x=6 in the table which means y=14, then do f(14) by looking at x=14 in the table to get y=26, hence ff(6) =26
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    (Original post by JW22)
    Stuck on question 5 on https://7c95ed1f832973eac0c6e1a52b08...20C3%20OCR.pdf

    I have to find values to do with the graph of f(x) and I can't seem to figure out the equation from the graph and there's nothing in the C3 syllabus about something like this
    You don't need to know the equation. What's f(6)? The table tells you that f(6) = 14, so f(f(6)) = f(14). What's f(14)? The table tells you that too.

    f^{-1}(8) is asking you what value(s) of x corresponds to a y-value of 8. Use the given table again.
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    (Original post by JW22)
    Stuck on question 5 on https://7c95ed1f832973eac0c6e1a52b08...20C3%20OCR.pdf

    I have to find values to do with the graph of f(x) and I can't seem to figure out the equation from the graph and there's nothing in the C3 syllabus about something like this
    You don't need the equation if they have given you a table of values. Use that
 
 
 
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