Question

for this sequence -1 -7 -13 -19 -25

would this function rule be correct? f(x)=x-6

Answer 1

what do you think?

Answer 2

I think it is because the graph is going by -6 every time or well it is taking away six every time.

Answer 3

ehh... in reality it depends what you call the first value of the sequence :P. is that x= 0 or x=1.

Answer 4

it's f(n) = -1 -6n where n=0 is the first element.

Answer 5

you can change it if you want n=1 to be the first element

Answer 6

what you have defined is called a "recursion" meaning the next term is 6 less than the last one. it would be written as
\[a_n=a_{n-1}-6\] but i do't think that is what is asked for

Answer 7

Ha i dont know.. the question just says write a function rule for that sequence :P
its supposed to be along the lines of f(x) (stuff here)

Answer 8

o_o then refer to me above :P

Answer 9

since you are decreasing by 6 each time, then you have a line with slope -6

Answer 10

Ha so i did it right !?

Answer 11

no you have the right idea, but i think you need something like
\[f(x)=-6x+5\]

Answer 12

if you are looking for a function. if you are looking for the rule for a sequence then it would be
\[a_n=a_{n-1}-6, a_1=-1\]

Answer 13

Oh.. well atleast i had the right idea :)