systems help!

- anonymous

systems help!

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- katieb

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- kropot72

The two lines intersect at the point (-2, 1).

- anonymous

thanks for coming
!

- anonymous

y=mx+b use that formula use it twice and make the y and x equal but vary the m and b
-2=m_1*1+b_1
-2=m_2*1+b_2 that ought to work i think.

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## More answers

- anonymous

i dont understand!

- anonymous

make the y and x equal to (-2,1).

- ghazi

from a point there could be infinitely many lines can pass through

- ghazi

so it could be so just write y=mx+c and put y=1 and x=-2

- anonymous

so :1=m(-2)+b

- anonymous

?

- ghazi

it could be anything like y=x+3

- anonymous

oh okay

- anonymous

i need another equation!

- anonymous

You need another equation?

- anonymous

Or another explanation?

- anonymous

i need to label line and bi have line a which is y=x+3 now i need another equation!

- anonymous

need to label line a and b and i have line a already

- anonymous

let me scan the paper for you so it will help u okay

- anonymous

Wow, I was just about to ask you! :) Okay! :)

- anonymous

sorry cofee fell on it butll make sure ill show u just give me 2 minutes okay! :)

- anonymous

Sure! Take your time. :)

- anonymous

i think this is it!

##### 1 Attachment

- anonymous

the second questions says what is the quation of each line u drew in problem 5? explain how u wrote each equation!

- anonymous

Hmm, just a sec, Tahmina. I must go calm my dog down (she's scared of thunder lol). But I have reviewed your question. :)

- anonymous

okay but i need u so please hurry! i have to got to bed its kinda getting late and i have school and i need to get enough sleep! thanks!

- anonymous

:)

- anonymous

what happened? :(

- anonymous

u suddenly were typing then poof ur gone oh tafkas i really need ur help please!

- anonymous

yeah theres u go ur typing again :) yay! :)

- anonymous

Poor dog! :) Arrgh...
Pick any two points that you made, then use this calculator:
http://www.miniwebtool.com/slope-intercept-form-calculator/
It will also show you the steps.

- anonymous

sorry about that. :/

- anonymous

im bad at this i tried this kind athying! sorry about that!

- anonymous

The points on your line that I would use are (-2, 1) and (0,3)

- anonymous

ONce you plug in those values, it will create the equation that you need.

- anonymous

but i dont have another coordinates can u show me im confused and tired :(

- anonymous

here, I plugged it in for you:
http://www.miniwebtool.com/slope-intercept-form-calculator/?x1=-2&y1=1&x2=0&y2=3

- anonymous

thansk! i need line b now

- anonymous

please!

- anonymous

Okay, line b must be parallel. do point slope form:
y - y1 = m(x - x1)
and plug in your values:
y - (1) = 1(x - (-2))
y - 1 = x + 2
y = x +3
since your slope is one, you can have literally anything for your next line:
y = x + 5
got it?

- anonymous

oh okay! i was gonna ask u that!

- anonymous

sam slope but difrent y itercep tno wits coming back to me ohhh

- anonymous

Great! So you think you got it, now?

- anonymous

yeah! thanks! for all ur help1

- anonymous

Awesome! You're welcome, Tahmina. You know I don't mind helping you. :) Oh, there's the dog again... :)

- anonymous

and the lightining?

- anonymous

Ha ha, it freaks her out. She's not a chihuahua, but she shakes like one when she hears thunder XD

- anonymous

can u help me with another problem!?

- anonymous

|dw:1362706517622:dw|

- anonymous

hello?

- anonymous

:)

- anonymous

Let's get rid of "y." The second equation can be simplified. Divide all those terms in the second equation by 4:
2x+3y=2
(24x+4y=12)/4 --> new equation: 6x + y = 3
NEW SYSTEM:
2x+3y=2
6x + y = 3
multiply second equation by -3 to get rid of the y terms.
NEW SYSTEM:
2x+3y=2
-18x -3y = -9
____________________________________ (add the equations)
-16x = -7
x =.......
Do you understand this?

- anonymous

so the answer is c?

- anonymous

thanks!

- anonymous

tgt bye ! have to pray ans take a shower see u next time!

- anonymous

Yes! :) See you next time! :D

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