anonymous
  • anonymous
systems help!
Mathematics
katieb
  • katieb
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kropot72
  • kropot72
The two lines intersect at the point (-2, 1).
anonymous
  • anonymous
thanks for coming !
anonymous
  • 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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anonymous
  • anonymous
i dont understand!
anonymous
  • anonymous
make the y and x equal to (-2,1).
ghazi
  • ghazi
from a point there could be infinitely many lines can pass through
ghazi
  • ghazi
so it could be so just write y=mx+c and put y=1 and x=-2
anonymous
  • anonymous
so :1=m(-2)+b
anonymous
  • anonymous
?
ghazi
  • ghazi
it could be anything like y=x+3
anonymous
  • anonymous
oh okay
anonymous
  • anonymous
i need another equation!
anonymous
  • anonymous
You need another equation?
anonymous
  • anonymous
Or another explanation?
anonymous
  • anonymous
i need to label line and bi have line a which is y=x+3 now i need another equation!
anonymous
  • anonymous
need to label line a and b and i have line a already
anonymous
  • anonymous
let me scan the paper for you so it will help u okay
anonymous
  • anonymous
Wow, I was just about to ask you! :) Okay! :)
anonymous
  • anonymous
sorry cofee fell on it butll make sure ill show u just give me 2 minutes okay! :)
anonymous
  • anonymous
Sure! Take your time. :)
anonymous
  • anonymous
i think this is it!
1 Attachment
anonymous
  • anonymous
the second questions says what is the quation of each line u drew in problem 5? explain how u wrote each equation!
anonymous
  • 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
  • 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
:)
anonymous
  • anonymous
what happened? :(
anonymous
  • anonymous
u suddenly were typing then poof ur gone oh tafkas i really need ur help please!
anonymous
  • anonymous
yeah theres u go ur typing again :) yay! :)
anonymous
  • 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
  • anonymous
sorry about that. :/
anonymous
  • anonymous
im bad at this i tried this kind athying! sorry about that!
anonymous
  • anonymous
The points on your line that I would use are (-2, 1) and (0,3)
anonymous
  • anonymous
ONce you plug in those values, it will create the equation that you need.
anonymous
  • anonymous
but i dont have another coordinates can u show me im confused and tired :(
anonymous
  • 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
  • anonymous
thansk! i need line b now
anonymous
  • anonymous
please!
anonymous
  • 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
  • anonymous
oh okay! i was gonna ask u that!
anonymous
  • anonymous
sam slope but difrent y itercep tno wits coming back to me ohhh
anonymous
  • anonymous
Great! So you think you got it, now?
anonymous
  • anonymous
yeah! thanks! for all ur help1
anonymous
  • anonymous
Awesome! You're welcome, Tahmina. You know I don't mind helping you. :) Oh, there's the dog again... :)
anonymous
  • anonymous
and the lightining?
anonymous
  • anonymous
Ha ha, it freaks her out. She's not a chihuahua, but she shakes like one when she hears thunder XD
anonymous
  • anonymous
can u help me with another problem!?
anonymous
  • anonymous
|dw:1362706517622:dw|
anonymous
  • anonymous
hello?
anonymous
  • anonymous
:)
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
  • anonymous
so the answer is c?
anonymous
  • anonymous
thanks!
anonymous
  • anonymous
tgt bye ! have to pray ans take a shower see u next time!
anonymous
  • anonymous
Yes! :) See you next time! :D

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