Question

Nora says that the graph of a circle is a function because she can trace the whole graph without picking up her pencil. Mia says that a circle graph is not a function because there are multiple values of x that map to different y-values. Determine if either one is correct, and justify your answer completely.

Answer 1

A circle is not a function.

Nora is incorrect and her reason makes no sense.

Mia correct in her conclusion that a circle is not a function, but her reasoning is wrong. She confused her variables