Question

Which statement describes the mapping?
Responses
A The mapping represents y as a function of x, because each y-value corresponds to exactly one x-value.The mapping represents y as a function of x , because each y -value corresponds to exactly one x -value.
B The mapping represents y as a function of x, because each x-value corresponds to exactly one y-value.The mapping represents y as a function of x , because each x -value corresponds to exactly one y -value.
C The mapping does not represent y as a function of x, because two of the x-values correspond to the same y-value.The mapping does not represent y as a function of x , because two of the x -values correspond to the same y -value.
D The mapping does not represent y as a function of x, because there are more x-values than different corresponding y-values.The mapping does not represent y as a function of x , because there are more x -values than different corresponding y -values.
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Answer 1

B

A relation is a function when each x-value corresponds to exactly one y-value. Option B states that correctly.