Question

Determine which relation is a function.

Answer 1

if you see an x-coordinate more than once in a relation, then this relation is NOT a function.

Answer 2

I think is b

Answer 3

in B, 2 of the points you have are: (0,4) and (0,1)

Answer 4

look at your points...they are set up like this (x,y)
a function will not have 2 or more x values the same...they can have 2 or more y values the same, just not the x ones
It is not B because B has 2 x values that are 0

Answer 5

so that is out, it's not a function

Answer 6

@ILovemek please come back.
B is not a function, we know that....

can you just look through the remaining options and tell what you think?

Answer 7

d

Answer 8

d is a function?

Answer 9

look at your second and third points in relation in option D:
\\// \\//
(-1,3) and (-1,2)

Answer 10

are you sure D is a function?

Answer 11

no

Answer 12

c but am not sure:/

Answer 13

you seem to be just guessing.

Answer 14

yup:/

Answer 15

@SolomonZelman

Answer 16

you just have too look at x values
if there r x values more than once then that is not function
in order pair
this value always x