Question

Which of the table in the image below represents a function?

Answer 1

table C

Explanation:

function

* one object/ input must only have one image/ output

* only one-to-one relation and many-to-one relation is a fuction

table A

= one-to-many relation

= input 8 has two outputs ( -9 and -8 )

= not a function ❌

table B

= one-to-many relation

= input 7 has two outputs ( 12 and 13 )

= not a function ❌

table C

= one-to-one relation

= all input has only one output

= a fuction ✅

table D

= one-to-many relation

= input 10 has two outputs ( 0 and 4 )

= not a function ❌