Question

find the funtion rule

x = -2, -1, 0, 1, 2,

y= 9, 4, -1, -6, -11

Answer 1

@iambatman @shrutipande9 @perl @sleepyjess please help!!!!!!!!!!!!!!!

Answer 2

@KyanTheDoodle @NeonStrawsForever

Answer 3

I think I may be able to help

Answer 4

ok, thanks

Answer 5

What patterns can you find by this rule?

Answer 6

I found that as x goes up by 1, y goes down by 5.

Answer 7

ya thats right

Answer 8

so what would be the funtion rule?

Answer 9

That's your question to answer. What's the function rule?

Answer 10

i think the rule is y= 5??

Answer 11

I don't think that's it. What kind of answer are they looking for?

Answer 12

you have to find the funtion rule and explain how you did it

Answer 13

Well I don't really know how to explain how I found it. You just kinda see it at one point. Any more ideas on what the function rule is. It goes along the lines of y = x (and then something)

Answer 14

i dont know

Answer 15

Hmm

Answer 16

thank i need to go

Answer 17

x = 1, y = -5 because as I said before, as X goes 1 up, Y goes 5 down.

Answer 18

notice that for values of x:

y(0) = -1 -5(0)
y(1) = -1 -5(1)
y(2) = -1 -5(2)

etc ....

therefore, what does y(x) equal?

Answer 19

find the common difference :)

Answer 20

Here is an idea:\[
y=f(x) =\begin{cases}
-1&x=0\\
f(x-1)-5&\text{otherwise}
\end{cases}
\]