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Question 4. 4. What is the y-coordinate of the solution to the system of equations? x- y = - 11 y+7 = - 2x
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Question 4. 4. What is the y-coordinate of the solution to the system of equations?

x- y = - 11
y+7 = - 2x

User ShadowMitia
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8.2k points

1 Answer

6 votes

x-y=-11 \\ \underline{y+7=-2x} \\ x+7=-11-2x \\ x+2x=-11-7 \\ 3x=-18 \ \ \ |/ 3 \\ x=-6 \\ \\ x-y=-11 \\ -6-y=-11 \ \ \ |+6 \\ -y=-5 \ \ \ |* (-1) \\ y=5 \\ \\ (x,y)=(-6,5)
User Nathan Strong
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