High School Algebra

Question

A relation R is defined by this list of ordered pairs:

    (4, 6), (5, 7), (3, 7), (4, 6), (5, 5), (6, 4)

What is the domain of relation R?

A.{4, 5, 3, 4, 5, 6}
B.{6, 7, 7, 6, 5, 4}
C.{3, 4, 5, 6}
D.{4, 5, 6, 7}

 

Answer 1

THe domain is the first number in each ordered pair, that is the X coordinate

 

{3,4,5,6}

 

answer is C