Respuesta :

Maybe for number of dots it can count by 5? (1,5) (2,10) (3,15) etc.
Draw step 3) Add one dot to every side in step two you can see that the 4 sides have 2 dots just add 1 more dot to each side and you'll have your step 3 solved. 
number of dots (y) count up by 5's. 0 5 10 15 and so on..
i hope this is correct. goodluck.