SOLUTION: Which of the following relations are functions? I. X 2,0,0,2 Y0,1,4,9 II. X 0,1,4,9 Y2,0,0,2 III. X-1,0,1,2 Y4,-2,-4,-8 A. II and III B. I and III C. III only D

Algebra ->  Equations -> SOLUTION: Which of the following relations are functions? I. X 2,0,0,2 Y0,1,4,9 II. X 0,1,4,9 Y2,0,0,2 III. X-1,0,1,2 Y4,-2,-4,-8 A. II and III B. I and III C. III only D      Log On


   

Question 459296: Which of the following relations are functions?
I. X 2,0,0,2
Y0,1,4,9
II. X 0,1,4,9
Y2,0,0,2
III. X-1,0,1,2
Y4,-2,-4,-8

A. II and III
B. I and III
C. III only
D. I only
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
II and III are functions. I is not a function because the 0 corresponds to two different y-values.