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anonymous

  • 5 years ago

for this sequence -1 -7 -13 -19 -25 would this function rule be correct? f(x)=x-6

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  1. anonymous
    • 5 years ago
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    what do you think?

  2. anonymous
    • 5 years ago
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    I think it is because the graph is going by -6 every time or well it is taking away six every time.

  3. anonymous
    • 5 years ago
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    ehh... in reality it depends what you call the first value of the sequence :P. is that x= 0 or x=1.

  4. anonymous
    • 5 years ago
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    it's f(n) = -1 -6n where n=0 is the first element.

  5. anonymous
    • 5 years ago
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    you can change it if you want n=1 to be the first element

  6. anonymous
    • 5 years ago
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    what you have defined is called a "recursion" meaning the next term is 6 less than the last one. it would be written as \[a_n=a_{n-1}-6\] but i do't think that is what is asked for

  7. anonymous
    • 5 years ago
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    Ha i dont know.. the question just says write a function rule for that sequence :P its supposed to be along the lines of f(x) (stuff here)

  8. anonymous
    • 5 years ago
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    o_o then refer to me above :P

  9. anonymous
    • 5 years ago
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    since you are decreasing by 6 each time, then you have a line with slope -6

  10. anonymous
    • 5 years ago
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    Ha so i did it right !?

  11. anonymous
    • 5 years ago
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    no you have the right idea, but i think you need something like \[f(x)=-6x+5\]

  12. anonymous
    • 5 years ago
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    if you are looking for a function. if you are looking for the rule for a sequence then it would be \[a_n=a_{n-1}-6, a_1=-1\]

  13. anonymous
    • 5 years ago
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    Oh.. well atleast i had the right idea :)

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spraguer (Moderator)
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