Answer:
b = -9
Step-by-step explanation:
The function is given as :
The axis of symmetry for this function is x = 3/2
It is required to find the value of b. The axis of symmetry of a parabola is a vertical line that intercepts its vertex at its horizontal coordinate. It can be given by :
Putting x = 3/2 and a = 3 we get :
So, the value of b is -9.