Math
- huejas
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Math
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




- Morgoth
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Re: Math
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
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.

- Jstar1
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Re: Math
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![]()
what class are you taking

- huejas
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Re: Math
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![]()
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.



- Morgoth
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Re: Math
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
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

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



- Jstar1
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Re: Math
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
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

- huejas
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Re: Math
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
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
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



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Simplifique
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Re: Math
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.
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
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.

- Jstar1
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Re: Math
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

- huejas
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Re: Math
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)
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



- Morgoth
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Re: Math
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
so just infinity

- huejas
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Re: Math
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
lol alright
3 different ppl posting at once can be really confusing



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