This Is the Graph of F(x) = $\frac { 1 } { 3 }$

Short Answer

This is the graph of f(x) = $\frac { 1 } { 3 }$ $x ^ { 3 }$ - $\frac { 1 } { 2 }$ $x ^ { 2 }$ - 6x. What is the inflection point?
Enter your answer exactly as just an ordered pair of reduced fractions of form $\frac { a } { b }$ , or integers (a, b), or the word "none".