Deduce the function graph from the parabolic vertex coordinates.

a) [[$ f(x) = x^2 $]]

Answer: The coordinates of the vertex of the parabola are (, )

b) [[$ f(x) = -9x^2 $]]

Answer: The coordinates of the vertex of the parabola are (, )

c) [[$ f(x) = 13x^2 $]]

Answer: The coordinates of the vertex of the parabola are (, )

d) [[$ f(x) = -10x^2 $]]

Answer: The coordinates of the vertex of the parabola are (, )