Your friends error is as followed:
<em>In a Function, every vertical line must intersect the graph in not more than one point. </em>
<em>I hope this helped you out!! Have a happy thanksgiving :) </em>
If you are wanting it simplified then the answer is x^2y^4
Hi there!
I believe the answer you are looking for - is the third graph.
Hope this helps!
~Alexa