Math Problem

[Blazer06]

I need to make an equation (if possible) for the data:

hole # Score
1 118
2 113
3 115
4 110
5 112
6 107
7 109
8 104

and so on. i know the patern is +5, -2, +5, -2

but i cant figure out an equation


Blaze

[Redwolf]

Make a polynomial?

[Blazer06]

a whoie whaty?


Blaze

[SiliconJon]

Well, first off if the equation is in sequence with the hole number, then it's [-5,+2]

It that the direction it needs to go?

[Blazer06]

ummmm yeah..

i need to plug in any x value (hole #) and return with the proper y value (the score)

but since its not linear im not really sure what to do.

i know i could take the linear interprelation, but i was curious if there was a way i could get a formula


Blaze

[SiliconJon]

Oh boy, this looks like phhun.

[Blazer06]

s=((4^q)+1) +y-int

q is 1 if the number is even and 0 if the number is odd.

will give a slope of 5 or 2 respectively.

i can get the whole thing, but how do i figure out q?


Blaze

[SiliconJon]

Hmmm...I just don't know

I know that (Z + 5)(Z - 2) = 0 will give you the two possible answers...but is that even relevant in this case, as you need to have Z reliant on X, and then somehow produce Y...

So how do we go from [1,3,5,7...] to Z = +2

or is that even the right attack plan...

0, or relative to "ground[g]", would be 116

then 1 would be g + 2, y = 118
x = 2 = g - 3, y = 113
x = 3 = g - 1, y = 115
x = 4 = g - 6, y = 110
x = 5 = g - 4, y = 112

yeah, I know, that notation is crap...I know I should know this, being in calculus...but my mind is a blank.

[Blazer06]

well, my algrebra 2 teacher gave me and two other students this problem.

he said he didnt even know if there was an equation for it.

BUT wait i just got an idea!!


but have to leave for school


Blaze

[Blazer06]

okay the working equation i have is:
s = score
h = hole #
RD = Round
INT = Interger

S= -1.5h + (116 + RD(h/2 - INT(h/2)) * 3.5)


works, and my teacher likes it...
guess ill be passing algebra 2 advanced.


Blaze