6x - 4(x + 3)
6x -4x -12. Distribute
2x - 12. Combine like terms
Answer: 
Step-by-step explanation:
Given
Vertex of the parabola 
Focus of the parabola 
As the x coordinate of vertex and focus is same and focus lie below the vertex, therefore the parabola is the type of

distance between Vertex and focus is 1 unit

Parabola becomes

I know the B is 2
Sorry I don't know the A
The correct answer is -9/22.