SOLUTION: solve using matrices: 2x-y=6, 8x+2y=0

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Question 335367: solve using matrices:
2x-y=6,
8x+2y=0
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
[A]=%28matrix%282%2C2%2C2%2C-1%2C8%2C2%29%29
[x]=%28matrix%282%2C1%2Cx%2Cy%29%29
[b]=%28matrix%282%2C1%2C6%2C0%29%29
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det[A]=12
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[A]inv=%281%2F12%29%2A%28matrix%282%2C1%2C-8%2C2%29%29
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[x]=[A]inv[b]=%28matrix%282%2C1%2C1%2C-4%29%29