Question

Which of the following relations is a function?
{(0,2), (1,2), (2,2), (3,2)}
{(2,0), (2,1), (2,2), (2,3)}
{(3,5), (4,7), (5,9), (5,11)}
{(4,5), (6,7), (8,9), (8,11)}

Answer 1

A function CANNOT have 2 x values that are the same. They can have 2 y values that are the same, just not the x values.

now which answer choice does not have 2 x values that are the same ?

Answer 2

c

Answer 3

your number sets are (x,y),
C has 2 x values that are 5.....it is not C

Answer 4

so d?

Answer 5

look at D again...it has 2 x values that are 8...not D

Answer 6

ok i think it is A because the x values are different

Answer 7

exactly...you got it. Answer is A....good job

Answer 8

thank you very much

Answer 9

anytime :)