(b) The two sides of the square are 6x – 8y = 15 and 4y – 3x = 2 or 6x – 8y = 15 ‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌(1) and 6x – 8y = – 4 ‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌ (2) These two lines are parallel each other. So the distance between the two parallel lines would be the side of the square. ∴ side of square=