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 Post subject: I HAVE A TEST TOMORROW NEED HELPPosted: Thu, 9 Feb 2012 03:32:49 UTC
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Joined: Thu, 9 Feb 2012 03:28:31 UTC
Posts: 1
Okay so my test tomorrow is over finding the rule of n in a sequence for example

1 2 3 4 5 10 20
8 9 10 11 12 17 27

and then you have to find the rule for n and i have no clue how to or i get confused HELP
heres another example on my worksheet

1 2 3 4 5 10 20
-2 6 14 22 30 70 150 and now you have to find the rule for n

Last edited by kaylinjean on Thu, 9 Feb 2012 03:39:43 UTC, edited 1 time in total.

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 Post subject: Re: I HAVE A TEST TOMORROW NEED HELPPosted: Thu, 9 Feb 2012 03:33:57 UTC
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Joined: Wed, 30 Mar 2005 04:25:14 UTC
Posts: 12098
Location: Austin, TX
kaylinjean wrote:
Okay so my test tomorrow is over finding the rule of n in a sequence for example

1 2 3 4 5 10 20
8 9 10 11 12 17 27

and then you have to find the rule for n and i have no clue how to or i get confused HELP

Um....it looks like every time n goes up, you get your number to go up by 1. Still, there's no guarantee that's the rule, I can think of infinitely many other rules that could work as well.

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 Post subject: Re: I HAVE A TEST TOMORROW NEED HELPPosted: Thu, 9 Feb 2012 08:36:08 UTC
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Joined: Sun, 24 Jul 2005 20:12:39 UTC
Posts: 3690
Location: Ottawa Ontario
You probably mean this:
Code:
1 2  3  4  5 ... 10 ... 20 = n (term number)
8 9 10 11 12 ... 17 ... 27 = term value

1  2  3  4  5 ... 10 ... 20 = n (term number)
-2 6 14 22 30 ... 70 ... 150 = term value

I presume you're to simply "look" for a pattern.
In 1st one, you can "see" that every term is 7 less than corresponding term number.
In 2nd one, you can "see" that terms are increasing by 8.

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