SOLUTION: Professor is X cubed minus 5 a one to one function? I'm confused. Thanks for your help!

Question 688297: Professor is X cubed minus 5 a one to one function? I'm confused. Thanks for your help!
Found 2 solutions by jim_thompson5910, josmiceli:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
If you graph , you get this

since it passes the horizontal line test, it is one-to-one.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Here's the plot of

I would say it is a 1 to 1 function, because
there is 1 value of x for each value of y.
--------------
Here is a classic case of many values of x for
each value of y. It is

It is not a 1 to 1 function
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