We have, y=x+r . . . (i0 and ‌‌y=−x+r . . . (ii) The given lines are pehttps://examranking.com/admin/helprpendicular to each other. perpendicular distance ‌=‌
|r1−r2|
√2
=√2 ⇒‌‌r1−r2=2 ⇒ The difference between the y-intercepts =2 This can happen for five combinations {(0,2),(1,3),(2,4),(3,5),(4,6)} The difference between the x-intercepts =2 This can happen for five combination the total number of squares =5×5=25