Question

Which of the following represents a function?

Answer 1

a relation is only a function when each x value is paired with exactly one y value

in other words, each input produces exactly one output

Answer 2

so for instance

if x = 2 lead to y = 3, y = 4 at the same time, then you don't have a function. It needs to lead to exactly one y value.

Answer 3

I thin its c..

Answer 4

why C

Answer 5

what's unique to C that isn't found anywhere else

Answer 6

it goes in order both forwards and backwards, te others do not..

Answer 7

what do you notice about the x values?

Answer 8

notice how there are repeated x values in choices A, B, D

but that's not the case in choice C

Answer 9

oh..it leads directly to the other number

Answer 10

those repeated x values mean you won't have a function (it means x maps to more than one y output)

Answer 11

so c is correct ?

Answer 12

correct

Answer 13

it has nothing to do with order

just with those repeated x values