[填空题]
Consider the quadratic functio3d d48iaafwmrprixf)6 5(c7ar3e , wyn f(xw7-n2vfme :2 rl9ootm)=a$x^2$+bx+c. The graph of y=f(x) is shown in the diagram below. The vertex of the graph has coordinates R(m,−9).
The graph intersects the x-axis at two points; P(−4,0) and Q(2,0).
1.Find the value of m. m =
2.Find the values of a, b, and c. a = b = c =
3.Write down the equation of the axis of symmetry of the graph. x =