Question

1. Select the letter of the best answer.

Determine which relation is a function.
(Points : 1)
{(3, 2), (1, 3), (1, 2), (0, 4), (1, 1)}

{(3, 2), (2, 3), (1, 1), (0, 4), (0, 1)}

{(3, 3), (2, 3), (1, 1), (0, 4), (0, 1)}

{(3, 2), (2, 3), (1, 2), (0, 4), (1, 1)}

Answer 1

Wouldn't it be the 3rd one down?

Answer 2

why would you think that? and no

Answer 3

It defe. couldn't be the first one nope I'm debating in the 2cd and the last one :D

Answer 4

function- basically one input one output

things that do not work
one input 2 output
one input 3 output

Answer 5

Yea im thinking the second

Answer 6

input being the x component and output being the y component

Answer 7

the 2nd one wouldn't work
reason
{(3, 2), (2, 3), (1, 1), (0, 4), (0, 1)}

look at the last 2 coordinate

they both have 0 as an input but different numbers as outputs

Answer 8

sorry, im not that great at explaining functions

think of it this way
a function as a machine with only one entrance and one exit

if you put a number into the entrance, the machine will convert it into a number using various operations

if you put the same number in the machine twice, the result would be the same number, not 2 different numbers

Answer 9

the reason why the 2nd line isnt a function is because of hte last 2 coordinates

if we put in 0, we get 4 the first time

so the machine could be like adding 4 to each number that it enters

so if we put in 0 again, the result would have to be 4
but the last coordinate doesnt make sense because 4 is not 1
and the machine isnt changing