Choose the option that best describes how to determine if a Item 1

Question

relation is a function.



(1 point)



Item 2
Item 3

Check that for each value of x, there is only one value of
y.






Check that for each value of y, there is only one value of
x.



Check that for each output, there is only one input.
Check that a horizontal line could move across the y-axis
and only intersect the graph of the relation in one spot at
a time.

Answer 1

The correct option is: Check that for each value of x, there is only one value of y.