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Let the equations of two sides of a triangle be 3x – 2y + 6 = 0 and 4x + 5y – 20 = 0. If the orthocentre of this triangle is at (1, 1), then the equation of its third side is :

1. 26x – 122y – 1675 = 0
2. 26x + 61y + 1675 = 0
3. 122y – 26x – 1675 = 0
4. 122y + 26x + 1675 = 0

Correct answer: 26x – 122y – 1675 = 0

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