SOLUTION: (-2,0), y=x -6 (1,-3), y= 1/2x+ 4 -9, -7, -5, -3,... For n=18 I am have a problem I can't get these any help would be great

Algebra ->  Expressions-with-variables -> SOLUTION: (-2,0), y=x -6 (1,-3), y= 1/2x+ 4 -9, -7, -5, -3,... For n=18 I am have a problem I can't get these any help would be great      Log On


   

Question 958660: (-2,0), y=x -6
(1,-3), y= 1/2x+ 4
-9, -7, -5, -3,... For n=18

I am have a problem I can't get these any help would be great
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
For the first two, what is the question?
Please repost with additional information.
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The third one looks like a series starting at -9 and increase by 2.
a%5Bn%5D=-9%2B2%28n-1%29=-9%2B2n-2=-11%2B2n
So when n=18,
a%5B18%5D=-11%2B2%2818%29
a%5B18%5D=-11%2B36
a%5B18%5D=25