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Find out the correct answer out of the options given against each question : If ax + by=1 is the relation between x and y (where `a gt 0` and `b gt 0`), then correlation coefficient between x and y is-

A

`+1`

B

-1

C

0

D

`+1`

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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2017-Exercise
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