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?

24

54

72

126

@Mertsj

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?

24

54

72

126 

@Mertsj

mertsj · Answer

Do you know how to find a difference?

mertsj · Answer

Why did you skip out on the Venn Diagram question?

anonymous · Answer

Yeah, I just forgot which one was the domain. > . <

mertsj · Answer

Domain is set of x values.

anonymous · Answer

And I skipped on the Venn because it is getting late for me and I have quite a bit more to do.

anonymous · Answer

Okay, so find the greatest and least x value and subtract them basically?

anonymous · Answer

Also, Which relation does not represent a function?

(-9, 3), (-2, 1), (1, 3), (5, -6)

(2, 0), (4, 8), (7, 5), (1, 5)

(-6, 2), (2, 5), (-4, 0), (2, 6)

(-4, 6), (-1, 1), (0, 4), (4, 7) 

I picked the last one. Is that correct?

mertsj · Answer

yep

anonymous · Answer

Yes to which one.