help please

K

kaebun

Junior Member
Joined
Sep 11, 2005
Messages
135
okay dokey so here it is
x |3 | 4 | 5 | 6 | 7 | 8 |
y | 8|15|24|35|48|63|
so thats the table and you are supposed to find the equation... im not sure where to start
thanx 8-)
 
anybody? this is my last math problem i just need some help.... i can help u in return to ... or least try please :)
 
What method are you supposed to use to find an equation through these points? Are you supposed to do a linear regression in your graphing calculator? Or something else? How far have you gotten?

Thank you.

Eliz.

P.S. The tutors are volunteers who surf by when they can. There is no paid staff waiting on-hand to give instant replies. You should expect to wait hours, if not days, for an online reply.
 
well there is a list of equation that it could possibly and we have to pick witch graph... it doesn't matter how we get the answer i don't think...
this is what ive done so far....
ax^2+bx+c=y
and so i put in 3 for x and 8 for y
a3^2+b(3)+c=8 but im not sure that right
 
well i guess ill just get help from my friends at lunch tomarow
 
There is a long way to do it. You can graph the table and see which linear equation it looks like. It would be faster to graph on a calculator because it already has a table and you can just match it up! Hope it helps.
 
kaebun said:
[W]ell[,] there is a list of equation that it could possibly [be,] and we have to pick [which] graph [is a match].
Click to expand...

Will you be including this information at some point? (We can't see your book, so, until you tell us, we can't know what you're working with.) At the very least, you've compared the list of (x, y) points to the graphs, to see which graph(s) contain(s) those points, right?

Eliz.
 
yes i have compared the points and they don't match up.... i didn't give you that info because it is way to much to type up and anyways i don't need help with this problem anymore i was helped by skanking help :)
 
Did a little fiddling and figured it out . . .

The equation is:

y=x^2 - 1

I didn't do anything special; it was just trial and error
 
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