anonymous
  • anonymous
x - y = 9 x + 2y = -6 Choose one answer. a. (5,4) b. (4,-5) c. (4,5) d. (-5,-4)
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
x - y = 9 x + 2y = -6 subtract the two equations simulataneously -3y = 15 y = -5 now solve for x
apoorvk
  • apoorvk
solve these two equations! subtract the whole of the first equation from the second! the 'x' gets eliminated, and you can find out 'y' then. And use this value of 'y' to get 'x'!
anonymous
  • anonymous
Subtract the two equations what you got??

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anonymous
  • anonymous
ohk hold on
anonymous
  • anonymous
Sure, take your time..
anonymous
  • anonymous
-3y=-15?
anonymous
  • anonymous
-3y=15
anonymous
  • anonymous
-3y = 15 is right. now solve for y
anonymous
  • anonymous
you do that by dividing both sides by the coefficient of y
anonymous
  • anonymous
Hi abb50.. She is a good girl.. She will calculate on her own.. Do not need to tell her...
anonymous
  • anonymous
i didn't tell her anything
anonymous
  • anonymous
Dividing both sides by......................etc etc..
anonymous
  • anonymous
it was just a hint. is that not allowed?
anonymous
  • anonymous
Let her do on her own.. if not then you surely can give hints...
anonymous
  • anonymous
okay sorry
anonymous
  • anonymous
lol what? abb50 you have nothing to apologize for.
anonymous
  • anonymous
I do not want to hear sorry from you abb50.. Even I am sorry if I talked rude to you...
anonymous
  • anonymous
thnx both of u guys i got the y but i got 14 for the x which im sure is wrong
anonymous
  • anonymous
@abb50 u were helping nd thnx i got -5 anyway even without u giving it to me lol i didnt even realized u gave me the answer thats how dumb i am!
anonymous
  • anonymous
nd thanx @waterineyes for all ur help!!! i am learning a lot from u!!!
anonymous
  • anonymous
No need to say thanks... See, from first equation: x - y = 9 So here, x = 9 + y put y: x = 9 + (-5) Now solve for x...
anonymous
  • anonymous
ohk hold on
anonymous
  • anonymous
4!
anonymous
  • anonymous
so the answer is b?
anonymous
  • anonymous
That's the one with x=4 and y=-5 ;)
anonymous
  • anonymous
yes!
anonymous
  • anonymous
thnx all of u!!

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