## JayDelV one year ago Which sequence is modeled by the graph below?

1. JayDelV

2. JayDelV

$A. a_{n}=\frac{ 1 }{ 3 }(27)^{n-1}$ B. $a_{n}=27(\frac{ 1 }{ 3})^{n-1}$ C. $a_{n}=(-3)^{n-1}$

3. zzr0ck3r

these are just functions, so plug in the given values of $$n$$ and see which one corresponds to the graph

4. zzr0ck3r

where does 1 map to?

5. JayDelV

D. $a_{n}=3(1/2)^{n-1}$

6. JayDelV

one sec its not opening

7. phi

It may not be obvious, but I would match up "x" with "n" look at your graph. when x=2, you want a formula that gives 9 I would test n=2 in each formula and see if I get 9

8. zzr0ck3r

that would imply (1,3) is on the graph

9. zzr0ck3r

You need only to look at the output of $$1$$.

10. phi

zz, x=1 is not plotted.

11. JayDelV

I am not understand at all, I skimmed over this chapter and am solely regretting it

12. JayDelV

so bare with me :(

13. JayDelV

understanding*

14. zzr0ck3r

you are given three sequences evaluate each one at 1 and you will get (1, 1/3),(1,27) and (1,1) only one of these is could possibly be on the graph

15. zzr0ck3r

@phi exactly

16. zzr0ck3r

its plotted, its not in the graph window.

17. JayDelV

Oh so which ever one of those that can be plotted?