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#101 2011-07-31 01:03:13

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

yup much much better smile


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#102 2011-07-31 01:07:45

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Very good!


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#103 2011-07-31 07:42:28

zee-f
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Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

i really need help in this the question says In questions 6 – 10, solve the quadratic equation by graphing. and it gives me a graph with like no equation on top of it i honestly dont get how  to do it can anybody help me and explain how to do these i posted a picture of what they gave me


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#104 2011-07-31 07:43:37

zee-f
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Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

this is the image


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#105 2011-07-31 07:45:45

zee-f
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Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

..[img][/imgIn questions 6


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#106 2011-07-31 08:43:02

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Solving Quadratics by Factoring and Graphing

this should be the graph of x^2+7x+12


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

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#107 2011-07-31 09:44:25

zee-f
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Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

i want to know how u got it like i want a way so i can do the rest thanx


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#108 2011-07-31 09:51:51

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Hi zee-f;

The graph?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#109 2011-07-31 09:53:43

zee-f
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Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

hey bobbym

yeah am confused she just gives us the graph i dont get what am spouse to do


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#110 2011-07-31 09:54:57

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Hi;

What does the question say?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#111 2011-07-31 10:00:31

zee-f
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Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

In questions 6 – 10, solve the quadratic equation by graphing


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#112 2011-07-31 10:05:11

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Please bring them down to the bottom here.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#113 2011-07-31 10:08:07

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

like the graphs ??? she doesn't give me an equation just a graph


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#114 2011-07-31 10:08:48

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Oh, okay! Do you see the x and y axes?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#115 2011-07-31 10:10:22

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

yup


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#116 2011-07-31 10:12:04

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Do you see where the equation crosses the x axis?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#117 2011-07-31 10:14:52

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

the -4 and the -3 ?


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#118 2011-07-31 10:15:54

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Just to check, which one is the x axis?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#119 2011-07-31 10:16:01

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

no i mean the zero  my bad


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#120 2011-07-31 10:17:09

zee-f
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Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

the x is to the left the y is to the sky lol thats how i remember them


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#121 2011-07-31 10:20:00

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Yes, the horizontal one is the x axis.

You said -3 and -4. That would be on the left side of the y axis.

Then those are your two roots. That is how you solve by graphing.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#122 2011-07-31 10:39:33

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

so i should do it like this

y=ax^2+bx+c

isnt that what i have to find how can i find them


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#123 2011-07-31 10:43:47

zee-f
Member
Registered: 2011-05-12
Posts: 1,220

Re: Solving Quadratics by Factoring and Graphing

like can i get the steps on how u do the solving by graphing ?


One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3

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#124 2011-07-31 10:57:09

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Solving Quadratics by Factoring and Graphing

Hi zee-f;

y=ax^2+bx+c

That is the general form for a quadratic. You can not graph that one.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#125 2011-07-31 13:32:24

irspow
Member
Registered: 2005-11-24
Posts: 1,055

Re: Solving Quadratics by Factoring and Graphing

I think that your teacher just wants you to understand that by looking at a graph and not the equation that you can identify the roots as those points on the graph where the curve meets the x axis.  In the case of the graph that you posted the roots are indeed -3 and -4 as you indicated.  And you did that by just looking at the graph.  (which is what questions 6-10 are supposed to reinforce for you)

Last edited by irspow (2011-07-31 13:35:20)


I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

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