Question 75015
From your graph equation, you know the vertex of your parabola.
(-2,5) - vertex
And since the "a" value of the equation is positive, you know that your graph will open up. 
To get more points, plug in a point for "x" and you'll get a "y" value. 

Graph:
{{{graph(500,500,-10,10,-10,10,(1/3)x^2+(4/3)x+(19/3))}}}
Hope this helps!