Question

Which relation is also a function?

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

Answer 1

a function will NOT have 2 x values that are the same...they can have y values that are the same, just not the x values. So find which one has all x values that are different...and that is your function.

Answer 2

what

Answer 3

ok...your points are set up as (x,y)

look at the first answer choice.....(0,3) , (1,2) , (1,4) , (2,1)
all of your x values are : 0,1,1,2
do you understand that ?
and since there are x values that repeat....there are 2 ones, then this is not a function.
There can be no repeating x values...or it is not a function.

Answer 4

so basically, you have to find the one that has no repeating x values....all the x values have to be different....and that is your function

Answer 5

ok thank you

Answer 6

you find it yet ?

Answer 7

yeah got it right

Answer 8

sweet....it was D

Answer 9

thanks

Answer 10

no problem :)