Which describes the difference between the graph of f(x) = 3x2 + 2 and g(x) = 9x2?

Assuming that you want to list the transformations of g(x) and f(x); 

9x² --> stretch factor of 9 from base function x²

3x²+2 --> stretch factor of 3, translation of 2 units upwards from base function

Hope I helped :) 

F(x) will be  roughly U shaped with the vertex at the point (0,2).

g(x) will have it's vertex at the origin (0,0)  and will be a  narrower U shape.