Question

The first four terms of a sequence are shown below:

9, 5, 1, -3

Which of the following functions best defines this sequence?

Answer 1

what happens to 9 that gets you to 5?

Answer 2

so do you think this is subtraction or addition?

Answer 3

(A) f(1) = 9, f(n + 1) = f(n) - 4; for n >=1
(B) f(1) = 9, f(n + 1) = f(n) + 4; for n >= 1
(C) f(1) = 9, f(n + 1) = f(n) - 5; for n >=1
(D) f(1) = 9, f(n + 1) = f(n) + 5; for n >=1

I think it's subtraction

Answer 4

I also think the answer is C

Answer 5

subtraction by 5 or by 4?

Answer 6

ok you said C so lets check

Answer 7

9 - 5 = 5?

Answer 8

no

Answer 9

so 9-x=5 what is x?

Answer 10

I thought that f(1) is equal to 1 and up

Answer 11

x = 4

Answer 12

no they give you f(1)=9

Answer 13

oh ok

Answer 14

So then the answer is A

Answer 15

yup

Answer 16

thank you so much!

Answer 17

yw