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If (-4,5) is a vertex of a square and on...

If (-4,5) is a vertex of a square and one of its diagonal is 7x-y+8-0.Find the equation of other diagonal

A

`7x-y+23=0`

B

`7y+x=30`

C

`7y+x=31`

D

`x-7y=30`

Text Solution

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The correct Answer is:
C
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