SOLUTION: What is the y-coordinate of the point of intersection for x - y = 9 and x + 6y = -12?

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Question 306156: What is the y-coordinate of the point of intersection for x - y = 9 and x + 6y = -12?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What is the y-coordinate of the point of intersection for
x - y = 9
x + 6y = -12
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Subtract the 1st equation from the 2nd; then solve for "y":
7y = -21
y = -3
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Cheers,
Stan H.