A. the equation for a parabola with vertex ...is ...so for ...is

B.the equation for a line facing down with its axis of symmetry at 4 is

C.one of the possibilities

D.to do this you need to set up your equation [tex]y=a(x+3)^2+4...I know...now all you have to do is say is put in your values and solve for a...so you get ...so your equation is