Question

Which of the sets of ordered pairs represents a function? (5 points) A = {(1, −5), (8, −5), (8, 7), (2, 9)} B = {(7, −4), (7, −2), (6, −3), (−9, 5)}

Answer 1

Answer:None

Explanation:

For any function,any point in the domain has a unique image in the codomain.

For set
`A`:

`f(8)=-5` from the point
`(8,-5)`

`f(8)=7` from the point
`(8,7)`

For a same point
`8`,there are two images.

So,
`A` does not represent a function.

For set
`B`:

`f(7)=-4` from the point
`(7,-4)`

`f(7)=-2` from the point
`(7,-2)`

For a same point
`7`,there are two images.

So,
`B` does not represent a function.