I have a problem where I must find the Cartesian equation for:
x=t^2
y=4+3t
into
x=Ay^2+By+C
I have found C, but need help in finding the values for A and B

- anonymous

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- anonymous

it seems you are either missing some info here or im a bit more rusty on geometry than i thought, how exactly did you find C?

- anonymous

I came up with t^2=A(4+3t)^2+B(4+3t)+C

- anonymous

but i'm still kind of confused as to how I even got it ha

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## More answers

- anonymous

it's the correct problem i checked

- anonymous

yeah, you have 3 variables there and no way to eliminate any of them, so unless your proff gave you some format to put it into and then from that you know the points your trying to find?

- anonymous

i mean the way to eliminate them is to use the t value
and then deal with that bottom equation

- anonymous

so lik eeither put everything in terms of x or y

- anonymous

right but you can only ever solve the variables in terms of the other variables, meaning you can find A as a function of B and C, B(A,C) and C(A,B)

- anonymous

yes i know
that's why i need to find a way
out by plugging in constants on both sides of the equation
that make A or B go to zero in order to solve for the variables

- anonymous

ahh, right. and then you just do the same thing to find A and B i think, set the ones your not finding to 0

- anonymous

see i don't know how to do the rest
i'm really cracked out and can't thinka nymore ha

- anonymous

honestly you should confinr that with someone else too though, its been a while since iv done a problem like this

- anonymous

if your finding A you just set B and C to 0 because they are intercepts, right?

- anonymous

well i'll know if it's right because i have to type my answers into a computer system that will tell me if it's correct or not

- anonymous

unlimited trials

- anonymous

here we go: http://www.personal.kent.edu/~rmuhamma/Algorithms/MyAlgorithms/parabola.htm

- anonymous

so you have a polynomial function of the 2nd degree which is a quadradic

- anonymous

ok

- anonymous

question where do u go to school?

- anonymous

this is a trickey little bastard, you have to change the form of the original equation. see
If b = 0, the quadratic function has the form f(x) = ax2 + c.
so what i think you have to do, is noting those derived equations and plugging in 0 to the other variables you get some new equations which then allow you to solve for the others by plugging them into eachother. lemme keep reading

- anonymous

ughhh it sucks!! i haven't slept in two days fml

- anonymous

lol its been too long, i dont understand what that website is saying...

- anonymous

ok let me think about this for a minute and see if i can figure it out

- anonymous

do you work for this website or something or are you a student
? i don't really understand this website ha

- anonymous

nah im just a student

- anonymous

oh where?

- anonymous

Rochester Institute of Technology

- anonymous

small fluttering world

- anonymous

i go to u of r

- anonymous

no way hahaha thats crazy. i was about to say dont even lie to me that you go to rit, your sn has "girl" in it

- anonymous

haha yea i don't go there a lot, ha or ever for that matter, but i have some friends from high school there

- anonymous

oh your from around here, thats cool. what year are you?

- anonymous

i'm a junior

- anonymous

lol im a 3rd year too. i know a couple kids who went to school around here but i dont know what schools or anything cause im from boston

- anonymous

bosston, i lived there this summer ha, well i lived in watertown

- anonymous

literallrally everyone from u of r is from boston

- anonymous

i say boston its really the southern NH border but i'v driven through watertown more than once. and yeah it seems like that here too, i know tons of people from the boston area

- anonymous

im still in awe that at 2am out of 23 online people i found someone thats currently within a 10 mile radius of me

- anonymous

i am too, it's just too weird

- anonymous

what do you major in ?

- anonymous

computer engineering technology, you?

- anonymous

ha sounds intense, i'm doing business econ and psych

- anonymous

haha im concentrating in psych, too weird

- anonymous

haha oh the weird realms of the internet

- anonymous

its got to be less coincidental than were making it out to be. were in a pretty tech-savvy part of the english speaking world. but still thats the whole northern east coast...

- anonymous

how did you find this site?

- anonymous

haha idk i was just wearching for help things and it came up

- anonymous

why do you help random people with math?

- anonymous

honestly i dont really know

- anonymous

i kinda stumbled here like 2 days ago and got a kick out of helping people out with their math, most of the stuff on here is low level calc or easier so its not so bad

- anonymous

guess i got sick of facebook and this was another way to procrastinate?

- anonymous

i guess that's not a bad way to procrastinate, bettering the world's math skills

- anonymous

haha, yeah doing other people's homework is fun but doing my own is agonizing, go figure

- anonymous

ha

- anonymous

what class is your parabola thinger from? i dont remember having to do this stuff

- anonymous

third semester of calc

- anonymous

shows how much i learned in calc...

- anonymous

but it's something i learned a long time ago, i just don't remember it

- anonymous

don't worry though, i have the rochester minions working on it

- anonymous

the rochester minions eigh?

- anonymous

yes

- anonymous

you should prolly let me know how to go about contacting these minions. could be helpful for diff eq

- anonymous

haha, you literally just walk around u of r campus, they're around, sometimes you have to look in the stacks or the depths of the librar but there's always a guarantee you'll find one

- anonymous

haha, even at 2 am. that seems sketchy, especially the library part, whats a library?

- anonymous

the minions are having trouble with it too, darn

- anonymous

tell your professor that its impossible. ill see if my roomate knows how to do it

- anonymous

ok it's just it's due tomorrow morning at 6am
ick

- anonymous

haha people keep looking at this question and then leaving

- anonymous

theres 3 rit kids in here working on your silly parabola

- anonymous

you said you have infinite number of trys?

- anonymous

\[y=4+3\sqrt{x}\]

- anonymous

give that a go

- anonymous

i'll try it

- anonymous

idk how long this website will wokrk though, its slowing my comp down a lot

- anonymous

i got A it's 1/9, idk if that will help find B

- anonymous

lol i have no idea how you got that or what it means. anyways im going to go sleep or eat or something, facebook me (Tim Heebs) you should come to some parties and bring friends. god knows RIT needs help with the ratio at parties haha

- anonymous

haha yea, your name already showed up when i was worried about the problem, and yea us girls here sometimes want to go to some RIT parties, that would be cool

- anonymous

sounds good, ttyl then. good luck with your calc

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