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Let y = x + 2, 4 y = 3 x + 6 and 3 y = 4 x + 1 be three tangent lines to the circle ( x – h ) 2 + ( y – k ) 2 = r 2 . Then h + k is equal to

1. ) 2 1 ( 5 
2. 5
3. 6
4. 2 5

Correct answer: 5

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