Question

Is the relation a function?

{(14, 15), (5, 7), (3, 10), (11, 1), (5, 8)}
a. yes
b. no

Answer 1

A relation is not a function if there are 2 "y" values for any given "x" value. So, if you have multiple "x"'s (first number in each ordered pair), then there is no function.

Answer 2

So, you go through each ordered pair, one by one. First ask if there are multiple "14". If yes, then no function. If not, go to the next ordered pair. Are there multiple 5's? If yes, no function. If not, then go to the third, etc.

Answer 3

okay,. i get it! thanks :)

Answer 4

uw!