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Question

Which of the following ordered pairs is represented by the line 7x−5y−5=0.

A
(6,7)
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B
(7,7)
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C
(5,6)
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D
(8,7)
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Solution

The correct option is C (5,6)
7x5y5=0 can be re-written as 7x55=y or 7x51=y
Hence for integral values of both x and y,x has to be a multiple of 5.
The smallest non-zero multiple of 5 is 5 itself.
For x=5, we get y=71=6.
Hence, (5,6) satisfies the above equation.

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