The set of ordered pairs below defines a relation. In each ordered pair (x, y), x represents the daily wages of a plumber, and y represents the daily wages of her assistant.

{(144, 72), (171, 84), (198, 84), (171, 96), (144, 72)}

What is the difference between the values of the least and greatest elements in the domain of this relation?
Answer
24
72
126
54

Question

The set of ordered pairs below defines a relation. In each ordered pair (x, y), x represents the daily wages of a plumber, and y represents the daily wages of her assistant.

{(144, 72), (171, 84), (198, 84), (171, 96), (144, 72)}

What is the difference between the values of the least and greatest elements in the domain of this relation?
Answer
		24
		72
		126
		54

anonymous · Answer

domain is the x values:

least 144
greatest 198

difference 198 - 144 = 54