Question 1174855


The definition of a function says that one input must give us at most one output.
 
so, you have to check if there is going to be one {{{y }}}for one {{{x}}}

{{{x + y^3 = 1}}}
 {{{y^3 = 1-x}}}
{{{y=root(3, 1-x)}}}



The cube root function gives us one output per input. 

 As a consequence of the previous statement and using the definition of function we can say that from this equation we can write  {{{y}}}  as a function of  {{{x}}}} .