Author Topic: y=x^2-4  (Read 9755 times)

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Offline Scilla

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y=x^2-4
« on: March 06, 2008, 09:08:24 pm »
I hate Algebra... this should be so much easier for me..
:(

Offline AppleNick

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Re: y=x^2-4
« Reply #1 on: March 08, 2008, 02:43:53 pm »
parabola

Chrono

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Re: y=x^2-4
« Reply #2 on: March 08, 2008, 11:07:35 pm »
parabola = boooobs

Offline ssj4gogita4

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Re: y=x^2-4
« Reply #3 on: March 09, 2008, 06:40:19 am »
y= x+2 x-2

Offline VulturEMaN

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Re: y=x^2-4
« Reply #4 on: March 09, 2008, 07:43:08 am »
x = ur mom

Offline ssj4gogita4

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Re: y=x^2-4
« Reply #5 on: March 09, 2008, 10:54:53 am »
i <3 math

Zoolook the Mudkip

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Re: y=x^2-4
« Reply #6 on: March 09, 2008, 02:27:44 pm »
ESHUHSUEIHSUDFDSNDSFIDAAAAUUUUGGGHHH
FINE I'LL EXPLAIN SINCE SOMEONE HERE THINKS THAT FACTORING IS INVOLVED WHEN YOU ARE TRYING TO MAP PUT A PARABOLA >_>

Alright, you can already tell the direction of the parabola. It's positive so it'll go upward. If the equation was y=-x^2-4, then the parabola would go downward making it negative (as -x shows.)

Pick five numbers and make a chart. Choose something like 2, 1, 0, -1, -2. Start the chart off like this:

x|y=x^2-4|y|(x,y) <--Have those numbers I just mentioned each substitute for x. Now that you have an equation to work with, solve it
and you'll have your answer to y. I'll work a couple of them out for you so you know what to do.

2|y=(2)^2-4|0|(2,0)
1|y=(1)^2-4|-3|(1,-3)

There, now just substitute the other numbers for x and then solve for y. Once you're done, map out the parabola and HOLY dolphin noise YOU'RE DONE
You can also use a TI-84 calculator and go to graph. Just type the equation in there if you are lazy.
« Last Edit: March 09, 2008, 02:29:25 pm by Zoolook the Mudkip »

Offline Scilla

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Re: y=x^2-4
« Reply #7 on: March 09, 2008, 09:20:31 pm »
That was a surprisingly good explanation. :)

Offline ssj4gogita4

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Re: y=x^2-4
« Reply #8 on: March 09, 2008, 10:19:45 pm »
ESHUHSUEIHSUDFDSNDSFIDAAAAUUUUGGGHHH
FINE I'LL EXPLAIN SINCE SOMEONE HERE THINKS THAT FACTORING IS INVOLVED WHEN YOU ARE TRYING TO MAP PUT A PARABOLA >_>

Alright, you can already tell the direction of the parabola. It's positive so it'll go upward. If the equation was y=-x^2-4, then the parabola would go downward making it negative (as -x shows.)

Pick five numbers and make a chart. Choose something like 2, 1, 0, -1, -2. Start the chart off like this:

x|y=x^2-4|y|(x,y) <--Have those numbers I just mentioned each substitute for x. Now that you have an equation to work with, solve it
and you'll have your answer to y. I'll work a couple of them out for you so you know what to do.

2|y=(2)^2-4|0|(2,0)
1|y=(1)^2-4|-3|(1,-3)

There, now just substitute the other numbers for x and then solve for y. Once you're done, map out the parabola and HOLY dolphin noise YOU'RE DONE
You can also use a TI-84 calculator and go to graph. Just type the equation in there if you are lazy.

is there a bug stuck in your butt or something? I dont give a flip about parabolas.

Zoolook the Mudkip

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Re: y=x^2-4
« Reply #9 on: March 10, 2008, 01:47:45 am »
That was a surprisingly good explanation. :)
Indeed, sir....or ma'am, or something. Indeed.

ESHUHSUEIHSUDFDSNDSFIDAAAAUUUUGGGHHH
FINE I'LL EXPLAIN SINCE SOMEONE HERE THINKS THAT FACTORING IS INVOLVED WHEN YOU ARE TRYING TO MAP PUT A PARABOLA >_>

Alright, you can already tell the direction of the parabola. It's positive so it'll go upward. If the equation was y=-x^2-4, then the parabola would go downward making it negative (as -x shows.)

Pick five numbers and make a chart. Choose something like 2, 1, 0, -1, -2. Start the chart off like this:

x|y=x^2-4|y|(x,y) <--Have those numbers I just mentioned each substitute for x. Now that you have an equation to work with, solve it
and you'll have your answer to y. I'll work a couple of them out for you so you know what to do.

2|y=(2)^2-4|0|(2,0)
1|y=(1)^2-4|-3|(1,-3)

There, now just substitute the other numbers for x and then solve for y. Once you're done, map out the parabola and HOLY dolphin noise YOU'RE DONE
You can also use a TI-84 calculator and go to graph. Just type the equation in there if you are lazy.

is there a bug stuck in your butt or something? I dont give a flip about parabolas.
LOL WUT
Aren't you Mr. "I <3 math?" You don't give a flip about parabolas? I think that translates to, "I DON'T KNOW HOW TO DO THEM!"
Your statement is worthy of a dramatic stare:




GO MAP SOME PARABOLAS
« Last Edit: March 10, 2008, 01:54:15 am by Zoolook the Mudkip »

Offline ssj4gogita4

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Re: y=x^2-4
« Reply #10 on: March 10, 2008, 07:21:56 am »
Yeah, I get A's in math by not knowing how to do parabolas @_@

Zoolook the Mudkip

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Re: y=x^2-4
« Reply #11 on: March 10, 2008, 07:45:14 am »
Yeah, I get A's in math by not knowing how to do parabolas @_@
If you know how to do them, why did you factor the stupid thing?


Here:
x^2+2x+4
YOU SEE THIS? YOU SEE THIS? THIS IS A TRINOMIAL. IT'S QUITE OKAY TO FACTOR THIS. JUST DON'T MAKE A CHART AND TRY TO MAP OUT A PARABOLA LOLOLOLOLOLOLOLOLOLOL
« Last Edit: March 10, 2008, 07:50:59 am by Zoolook the Mudkip »

Offline Daniel

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Re: y=x^2-4
« Reply #12 on: March 10, 2008, 09:20:09 am »
...
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NERD.

=O

Zoolook the Mudkip

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Re: y=x^2-4
« Reply #13 on: March 10, 2008, 09:56:54 am »
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NERD.

=O
I LOST MY VIRGINITY TO VECTOR CALCULUS

PARABOLAS EVERYWHERE
« Last Edit: March 10, 2008, 10:04:39 am by Zoolook the Mudkip »

Offline ssj4gogita4

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Re: y=x^2-4
« Reply #14 on: March 10, 2008, 04:15:54 pm »
Yeah, I get A's in math by not knowing how to do parabolas @_@
If you know how to do them, why did you factor the stupid thing?


Here:
x^2+2x+4
YOU SEE THIS? YOU SEE THIS? THIS IS A TRINOMIAL. IT'S QUITE OKAY TO FACTOR THIS. JUST DON'T MAKE A CHART AND TRY TO MAP OUT A PARABOLA LOLOLOLOLOLOLOLOLOLOL

it's called a joke? To throw her off <.<