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Which of the following relations is a function?

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spin [16.1K]3 years ago

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D, sense there are no repeating numbers in the input (Y)

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(2)*2:
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4x+3y-(4x+6y)=5-2
4x+3y-4x-6y=3
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By sub. y=-1 in (2), we have
2x+3(-1)=1
2x-3=1
2x=4
x=2
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