Question

Can anybody finish the puzzle #14 please??

Answer 1

With each iteration, you're swapping the two coordinates, and then change sign of the first one:

First transformation

• Start with (3,1)
• Swap coordinates: (1,3)
• Change sign of the first coordinate: (-1,3)

Second transformation

• Start with (-1,3)
• Swap coordinates: (3,-1)
• Change sign of the first coordinate: (-3,-1)

Third transformation

• Start with (-3,-1)
• Swap coordinates: (-1,-3)
• Change sign of the first coordinate: (1,-3)