Question

Which of the following represents a function?

Answer 1

a

Explanation:

bc its the only one that makes sence to me heheh

Answer 2

Answer: Option D

Explanation:

A relationship is a function if and only if for each input value x (domain) only one output value y is assigned (Range)

Option A.

Note that x represents the input values and y represents the output values.

When
`x = 3` then
`y = 14` and
`y = 19`.

The input value
`x = 3` has two output values y assigned.

So the relationship is not a function

Option B.

Note that x represents the input values and y represents the output values.

When
`x = 3` then
`y = 0` and
`y = -5`.

The input value
`x = 3` has two output values y assigned.

So the relationship is not a function

Option C

Note that x represents the input values and y represents the output values.

When
`x = -1` then
`y = -11` and
`y = 5`.

`(-1,-11)` ,
`(-1, 5)`

The input value
`x = -1` has two output values y assigned.

So the relationship is not a function

Option D

Note that x represents the input values and y represents the output values and for each input value x (domain) only one output value y is assigned (Range)

`\{(-5, 3), (-3, 1), (-1, -1), (1, -1), (3, 1), (5, 3)\}`

So the relationship is a function