Question

Which of the following represents a function?

Answer 1

Answer:

a

Step-by-step explanation:

bc its the only one that makes sence to me heheh

Answer 2

Answer: Option D

Step-by-step 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