gabbyalicorn
  • gabbyalicorn
Which ordered pair is the solution to the system of equations? x+y=-1 x-3y=11 A. (2, −3) B. (−2, 1) C. (5, −2) D. (−6, 5)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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lochana
  • lochana
write equations for y.
lochana
  • lochana
you can re-arrange equations. \[y = -1 -x \]\[y = \frac{x-11}{3}\]
gabbyalicorn
  • gabbyalicorn
but -1-x =−x−1 & x-11/3 is justx+−113

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gabbyalicorn
  • gabbyalicorn
-11/3 i don't get it
lochana
  • lochana
no. we are asked to find solutions for given 2 equations. that means you need to find the point where those equations meet
lochana
  • lochana
okay?
gabbyalicorn
  • gabbyalicorn
Oh, that makes more sense
lochana
  • lochana
yes. so at the common point x and y of each equation are same that means y points are equal
lochana
  • lochana
so we equate \[-1 -x = \frac{x-11}{3}\]
lochana
  • lochana
\[3(-1-x) = x - 11\]\[4x = 8\]x = 2
gabbyalicorn
  • gabbyalicorn
that would be 4/3 for the first one
lochana
  • lochana
yes. you are correct
gabbyalicorn
  • gabbyalicorn
second one is 2
gabbyalicorn
  • gabbyalicorn
:D
lochana
  • lochana
bye
gabbyalicorn
  • gabbyalicorn
wait!!
gabbyalicorn
  • gabbyalicorn
so its 2,-3?

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