Question

Which of ordered pairs is not a function ?

1.) (0,9) , (9,0) , (1,2) , (3,4)
2.) (0,1) , (-1,0) , (1,2) , (3,2)
3.) (2,3) , (3,4) , (4,5) , (5,6)
4.) (2,3) , (2,4) , ( 4,5) , (4,6)

Answer 1

`Answer:4)\\\\because\\(2;\ 3)\to x=2\ and\ y=3\\(2;\ 4)\to x=2\ and\ y=4\\\\for\ this\ same\`