Question

Which relation is a function?


A.


(–8, –3), (–1, –5), (–8, –2)


B.


(1, –3), (5, –3), (–3, 7)


C.


(–3, 0), (5, 9), (–3, 2)


D.
(1, 2), (1, 1), (0, 1)

Answer 1

thats confusing.

Answer 2

In a function a x-value can only result a single y-value.

Example:
(–8, –3), (–1, –5), (–8, –2)

x = -8 -> y = -3
x = -8 -> y = -2

A is not a function because one x-value have different y-values.

Answer 3

im in a big hurry so is there anyway you could sum it up into a simple problem or something pplleeeaaasseee.

Answer 4

b

Answer 5

basically what he is saying no number in the domain (x) cannot repeat

Answer 6

It's a function if the value on the left side in each bracket occur only once.

Lets do some more examples:

(3, 4), (4, 5), (3, 2)
____ ____

x=3 -> y=4
x=3 -> y=2

Not a function.


(4, 5), (3, 2), (6, -3), (-3, 5)

Is a function because no x-value have the same y-value.


(-2, 4), (-2, 5), (3, 4)
______ ______

x=-2 -> y=4
x=-2 -> y=5

Not a function.

Answer 7

great. thx. i can use those for notes. thank y'all so very much.