Question

Please Help (attachment)

Answer 1

well... look at the points.. if the "x" repeats... then is NOT a function

Answer 2

a good way to catch a function is by using the "vertical line test" -> http://www.mathwarehouse.com/algebra/relation/images2/vertical-line-test/vertical-line-test-thumb-medium.png

Answer 3

it's not a function. Am I correct?

Answer 4

Oops i mean it is a function because X does not repeat.

Answer 5

yeap

Answer 6

It's B. am I correct or not?

Answer 7

I'd actually say "A"

Answer 8

Yes it is A. Thank you Fizi!

Answer 9

Yw ^.~