Math

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huejas
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Math

Post by huejas »

Okay so i got a math test 2morrow (grade 10), and my buddy already had the test. He said there is 1 question he didnt know the answer to. He said the question was like like 0y=7 and you have to explain what that means. He cant remember the exact question but its something like that. Does any1 have an idea about what im saying :banghead: :?
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Morgoth
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Re: Math

Post by Morgoth »

huejas wrote:0y=7

if that is the question then i believe the answer would be no solution
what topic are you guys getting tested on?
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huejas
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Re: Math

Post by huejas »

Morgoth wrote:
huejas wrote:0y=7

if that is the question then i believe the answer would be no solution
what topic are you guys getting tested on?

equations and graphing and shit like that
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Morgoth
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Re: Math

Post by Morgoth »

o, i see but yeah i dont think there's a solution to that particular problem
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Re: Math

Post by huejas »

Morgoth wrote:o, i see but yeah i dont think there's a solution to that particular problem

so i would just right the line(equation) had no solutions...becuause...
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Morgoth
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Re: Math

Post by Morgoth »

if it really is 0y=7 then there's no way to graph it, so yes just put no solution
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huejas
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Re: Math

Post by huejas »

Morgoth wrote:if it really is 0y=7 then there's no way to graph it, so yes just put no solution

okay thx :D and also thanks for quick reply
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Morgoth
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Re: Math

Post by Morgoth »

it just hit me
technically if you divide any number (in this case 7) by zero it is equal to infinity if you are trying to clear y that way


so you can put no solution and to explain why this is you can say that y=infinity
Last edited by Morgoth on Tue Feb 26, 2008 3:54 am, edited 1 time in total.
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Jstar1
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Re: Math

Post by Jstar1 »

huejas wrote:Okay so i got a math test 2morrow (grade 10), and my buddy already had the test. He said there is 1 question he didnt know the answer to. He said the question was like like 0y=7 and you have to explain what that means. He cant remember the exact question but its something like that. Does any1 have an idea about what im saying :banghead: :?


what class are you taking
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huejas
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Re: Math

Post by huejas »

Morgoth wrote:it just hit me
technically if you divide any number (in this case 7) by zero it is equal to infinity if you are trying to clear y that way


so you can put no solution and to explain why this is you can say that y=infinity

i was taught that you cant divide by zero...
hmm what about if i say the liek has no slope?


Jstar1 wrote:
huejas wrote:Okay so i got a math test 2morrow (grade 10), and my buddy already had the test. He said there is 1 question he didnt know the answer to. He said the question was like like 0y=7 and you have to explain what that means. He cant remember the exact question but its something like that. Does any1 have an idea about what im saying :banghead: :?


what class are you taking


grade 10 academic(university) math lol
Last edited by huejas on Tue Feb 26, 2008 4:05 am, edited 1 time in total.
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Morgoth
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Re: Math

Post by Morgoth »

hmmmm.... err well not really cause to start out it wouldn't have a slope in the first place even if y=7 and even if it was 0y=x+7 you're still dividing (x+7) by zero so it still turns to infinity

your best bet is that the answer is infinity (and yes dividing any number by zero =infinity :) )

maybe you can impress your teacher for some extra credit :D
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huejas
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Re: Math

Post by huejas »

Morgoth wrote:hmmmm.... err well not really cause to start out it wouldn't have a slope in the first place even if y=7 and even if it was 0y=x+7 you're still dividing (x+7) by zero so it still turns to infinity

your best bet is that the answer is infinity (and yes dividing any number by zero =infinity :) )

maybe you can impress your teacher for some extra credit :D

hmm okay

so basically tho, this is a line...and on the line you can graph inifity points therefore giving yu infinity solutions?
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Re: Math

Post by Jstar1 »

huejas wrote:
Morgoth wrote:hmmmm.... err well not really cause to start out it wouldn't have a slope in the first place even if y=7 and even if it was 0y=x+7 you're still dividing (x+7) by zero so it still turns to infinity

your best bet is that the answer is infinity (and yes dividing any number by zero =infinity :) )

maybe you can impress your teacher for some extra credit :D

hmm okay

so basically tho, this is a line...and on the line you can graph inifity points therefore giving yu infinity solutions?


no keep it simple, just answer it as no solution because 7/0 gives no solution. There is no line
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Re: Math

Post by Morgoth »

yeah what Jstar1 said, there wouldn't be anything to graph so just write it next to the graph i guess

good luck on your test
Last edited by Morgoth on Tue Feb 26, 2008 4:12 am, edited 1 time in total.
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huejas
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Re: Math

Post by huejas »

Morgoth wrote:hmmmm.... err well not really cause to start out it wouldn't have a slope in the first place even if y=7 and even if it was 0y=x+7 you're still dividing (x+7) by zero so it still turns to infinity

your best bet is that the answer is infinity (and yes dividing any number by zero =infinity :) )

maybe you can impress your teacher for some extra credit :D


Jstar1 wrote:
huejas wrote:
Morgoth wrote:hmmmm.... err well not really cause to start out it wouldn't have a slope in the first place even if y=7 and even if it was 0y=x+7 you're still dividing (x+7) by zero so it still turns to infinity

your best bet is that the answer is infinity (and yes dividing any number by zero =infinity :) )

maybe you can impress your teacher for some extra credit :D

hmm okay

so basically tho, this is a line...and on the line you can graph inifity points therefore giving yu infinity solutions?


no keep it simple, just answer it as no solution because 7/0 gives no solution. There is no line




see look...one of you says its infinity and the other says its none :banghead:
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huejas
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Re: Math

Post by huejas »

Morgoth wrote:yeah what Jstar1 said, there wouldn't be anything to graph so just write it next to the graph i guess

good luck on your test

alright, so no solution :roll:
thanks guys :D
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Morgoth
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Re: Math

Post by Morgoth »

well what he meant is that since there is no way to graph infinity there wouldnt really be a graph

but the answer is infinity (trust me; unless the problem isnt 0y=7 :D )
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Re: Math

Post by Simplifique »

0y=7 =/= y=infinity

0y=7 => 0=7 <--- illogical

It may simply be "nothing"y=7 ie y=7 =>
a straight horizontal line with 7 intercept on y axis.
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Morgoth
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Re: Math

Post by Morgoth »

Simplifique wrote:

It may simply be "nothing"y=7 ie y=7 =>
a straight horizontal line with 7 intercept on y axis.

that would be if it was 1y=7 (i dont think it was coincidence that the problem had a zero in front of y unless the problem was different)
Last edited by Morgoth on Tue Feb 26, 2008 4:18 am, edited 2 times in total.
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Re: Math

Post by Jstar1 »

Simplifique wrote:0y=7 =/= y=infinity

0y=7 => 0=7 <--- illogical

It may simply be "nothing"y=7 ie y=7 =>
a straight horizontal line with 7 intercept on y axis.


yeah you better hope your friend gave you the right info, cause then our help would be of little help
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huejas
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Re: Math

Post by huejas »

Morgoth wrote:well what he meant is that since there is no way to graph infinity there wouldnt really be a graph

but the answer is infinity (trust me; unless the problem isnt 0y=7 :D )


Simplifique wrote:0y=7 =/= y=infinity

0y=7 => 0=7 <--- illogical

It may simply be "nothing"y=7 ie y=7 =>
a straight horizontal line with 7 intercept on y axis.


okay so i combine these 2 and i finally got it...
the y intercept is 7
there is no slop
so its just a straight horizontal line
therefore giving you infinety solutions

am i right this time :roll:
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Morgoth
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Re: Math

Post by Morgoth »

no its just infinity cause if you have y=infinity how are you going to graph that? you cant. cause you couldnt just graph y=7 and make it go on for ever since it isnt y=7 its y=infinity

so just infinity :banghead:
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huejas
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Re: Math

Post by huejas »

Morgoth wrote:no its just infinity cause if you have y=infinity how are you going to graph that? you cant. cause you couldnt just graph y=7 and make it go on for ever since it isnt y=7 its y=infinity

so just infinity :banghead:


lol alright

3 different ppl posting at once can be really confusing :banghead:
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Re: Math

Post by Morgoth »

hey huejas, how did your test go?
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Re: Math

Post by NuclearSilo »

wtf is this stupid question? It's 1st grade class math.

0=7 or y=7/0 impossible, end of story.

If there is x: y=7/x , we use limit if x=0
when x->0+, lim y = lim 7/x = +infinity
when x->0-, lim y = lim 7/x = -infinity

x=0 doesnt exist because a number cant be both +infinity and -infinity
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huejas
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Re: Math

Post by huejas »

Morgoth wrote:hey huejas, how did your test go?

test went good :D
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Jstar1
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Re: Math

Post by Jstar1 »

huejas wrote:
Morgoth wrote:hey huejas, how did your test go?

test went good :D


i bet you got an A
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Re: Math

Post by FireJammerXR »

any value you plug in for Y will be multiplied by zero,and zero can never equal 7

look at it that way instead of trying to say 7/0 is undefined
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huejas
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Re: Math

Post by huejas »

Jstar1 wrote:
huejas wrote:
Morgoth wrote:hey huejas, how did your test go?

test went good :D


i bet you got an A

i bet so too :P haha
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