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Mathematics, 05.11.2020 19:50 tanafloe6264

Are the lines y = -x - 2y=−x−2 and 4x + 4y = 164x+4y=16 perpendicular?

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Are the lines y = -x - 2y=−x−2 and 4x + 4y = 164x+4y=16 perpendicular?...
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