Here's the question you clicked on:
lsugano
State whether the equation defines y as a function of x ...how do you do you do this? http://bamboodock.wacom.com/doodler/844946fb-dfdc-435e-9009-425501bd7100
the plus or minus part tells you that y is not a function of x
OH THANK YOU !!!! is there other information that tells you its not a function?
no ...i think thats only equired here