Consider the parabola given by the equation:
f
(
x
)
=
−
2
x
2
−
12
x
−
9


Find the following for this parabola:

A) The vertex:


B) The vertical intercept is the point


C) Find the coordinates of the two
x
intercepts of the parabola and write them as a list of points of form (x, y) separated by commas:

It is OK to round your value(s) to to two decimal places.