Question

The first four terms of a sequence are shown below:
7, 4, 1, -2

Which of the following functions best defines this sequence?

Answer 1

i will give a gold medal

Answer 2

well I would check to see if it was arithmetic sequence first :
do you have term-previous term=same number
like I mean are all the following equal:
4-7=?
1-4=?
-2-1=?

Answer 3

hold up let me put the answeres in

Answer 4

it wont let me copy and paste them in

Answer 5

anyone?

Answer 6

well I asked you a question and you haven't answered yet
so I don't know if you mean me or someone else because you don't understand what I'm asking you?

Answer 7

I'm asking you if all the differences are the same above
4-7=?
1-4=?
-2-1=?

Answer 8

if we can establish all of these are the same then we have an arithmetic sequence and that means we have a common difference

Answer 9

\[a_n=a_1+d(n-1)\]
d represents the common difference if there is one
So I'm still asking you the following questions:
4-7=?
1-4=?
-2-1=?

Answer 10

i

Answer 11

i have no idea what im doing lol

Answer 12

So you haven't done subtraction yet?

Answer 13

do you want to try doing 1-4=?
and -2-1=?