Which of the following relations describes a function? A.
{ (3, 2), (3, 3), (3, 4), (3, 5) }

B.
{ (0, 0), (1, -1), (1, 1), (2, 2) }

C.
{ (-1, 0), (0, -1), (0, 1), (1, 0) }

D.
{ (1, 3), (2, 3), (3, 3), (4, 3) }

Howdy! My name is Christian and I’ll try and help you with this question!

Date: 9/29/20 Time:  9:08 am CST

D.

{ (1, 3), (2, 3), (3, 3), (4, 3) }

Explanation:

This is because for each x value, the number on the left of the set, there is no other x values of the same number, ( 1, 2, 3, 4)

Hope this helps you with your question!

Sincerely,

Christian

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64