Question

Which of the following relations is a function?
A. { (1,2) , (1,3) , (1,4) , (1,5) }
B. { (1,3) , (2,3) , (4,3) , (9,3) }
C. { (5,4) , (-6,5) , (4,5) , (4,0) }
D. { (6,-1) , (1,4) , (2,3) , (6,1) }

Answer 1

a function can have for any x-value
only ONE y-value

Answer 2

so that would make the answer D then?

Answer 3

i see. sorry

Answer 4

:)

Answer 5

I already saw A) is also wrong

Answer 6

so must be B) or C)

Answer 7

ok, C has two y-values for x=4

so....its B)

Answer 8

would it be B

Answer 9

thank you(: