bewellplus.gsu.edu
nintimanny nintimanny
  • 26-01-2015
  • Mathematics
Answered



Question 4. 4. What is the y-coordinate of the solution to the system of equations?

x- y = - 11

y+7 = - 2x

Verified Answer :

naǫ
naǫ naǫ
  • 27-01-2015

\(x-y=-11 \\ \underline{y+7=-2x} \\ x+7=-11-2x \\ x+2x=-11-7 \\ 3x=-18 \ \ \ |\div 3 \\ x=-6 \\ \\ x-y=-11 \\ -6-y=-11 \ \ \ |+6 \\ -y=-5 \ \ \ |\times (-1) \\ y=5 \\ \\ (x,y)=(-6,5)\)

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