Choose the option that best describes how to determine if a relation is a function. (1 point) Responses Check that for each value of x, there is only one value of y. 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 value of y , there is only one value of x . Check that for each output, there is only one input. 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 option that best describes how to determine if a relation is a function is: Check that for each value of x, there is only one value of y.

This is the fundamental definition of a function: each input (x-value) must correspond to exactly one output (y-value).