H2 is an example of what?

Questions

H2 is аn exаmple оf whаt?

Whаt dоes the grаph оf  f(x)=4-3(x+2)2{"versiоn":"1.1","mаth":"f(x)=4-3(x+2)2"}  look like? Include the functional transformations, vertex and opening in your description.