guessing relation

Arthur Lee
Based on the two given points, what is the relation between x and y? 'Show a point' to see another point with the same relation. Generate more points to help you make a guess. If this one is too easy, enter any other coordinates for B and try again. This will create another relation for you to guess.
Try changing B to (7,14). What is the new relation? How about (5,1)? How about (5,13)? Go on to change both A and B to explore other relations.