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Which of these equations represents functions where x is the input and y is the output

Which of these equations represents functions where x is the input and y is the output-example-1

2 Answers

3 votes
B,C,D Is the answer

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User Ramiz Wachtler
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2 votes
B & C since y is equivalent to the operations on the other side, while there are no operations being performed unto y.
User Brahmam Yamani
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