Math Is Fun Forum

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

okay, all I was saying was, if it was safe th switch the X and Y, because the answer wants the x in front.

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

Sure x + y is the same as y + x.

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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.

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

okay. Thanks! may I try and attempt the problem I have, on my own and you can follow my work and check me?

Also I said I'd bring a bit Japanese, do you know your Japanese vowel sounds?

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

Of course not. You will have to help!

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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.

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

Okay, in Romaji, they are the same letters as in english.

a i u e o

Pronounciation is different though, of course. I use this to remember it: Ah We Soon Get Old

a = Ah. The word 'pan' which means 'bread' sounds like this: p-ah-n

i = We. The word 'midori' which means green sounds like this: me-doh-ree

u = Soon. The word 'kuruma' which means car sounds like this: koo-roo-mah

e = Get. The phrase 'ittekimasu' which means 'i am leaving' sounds like this: ee-teh-kee-mah-s

o = Old. The word 'onnanoko' means girl and sounds like this: oh-nah-noh-koh

*sorry for the late response I had dishes to do..

My new problem's points are (-2 , 2) and (5, 1)

I think the slope is -7?

Last edited by misheeru (2010-06-11 12:55:29)

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

Nope

---

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.

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

Hmm okay, lets do this step by step then.

( -2, 2), (5,1)

Slope = m= (y2 - y1) / (x2 - x1)
m= ( 1 - 2) / (5--2)
How is it looking so far?

and do you understand the vowels so far?

Last edited by misheeru (2010-06-11 13:10:33)

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

That's 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.

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

okay next:

m = (1-2) / (5--2)
m = -1/7?
how about now?

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

Hi misheeru;

Correct.

---

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.

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

Do I leave it like that or divide it? If I divide, won't I get a decimal?

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

Don't divide.

---

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.

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

okay. then we do the: (y - y1) =m(x - x1) now?

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

So you have m. Now just plug in.

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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.

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

would it be:

(y - 2) = -1/7(x - -2)?

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Of Moons, Birds and Monsters

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

(y - 2) = -1/7(x - -2)

simplified to: y - 2 = -1/7x -- 2?

Last edited by misheeru (2010-06-11 13:29:34)

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

Yes, that is correct.

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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.

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

Then from there do we get rid of the 2's?

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

Expand it first.

---

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.

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

Expand? What do you mean?

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

y - 2 = - 1/ 7( x+ 2)

y - 2 = (-1/7) x - 2 / 7 And now?

---

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.

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

Sorry the fractions are throwing me off, I'm not sure what to do now!

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

Add 2/7 to both sides:

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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.

misheeru

Member

Registered: 2010-02-18

Posts: 4,594

Re: Area problems Please Help!!

okay. So:

y - 2 = (-1/7) x - 2 / 7

goes to: y - 2= -1/7x...? possibly? Something like that...

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Of Moons, Birds and Monsters

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Area problems Please Help!!

Nope.

Add 2/7 to both sides.

y - 2 + 2/7 = (-1/7)x

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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.