Consider the quadratic function y equals short dash 3 x squared minus 12 x minus 7. what do we know about the graph of this quadratic equation, based on its formula?

a) Its vertex will be at the point (2, -31)
b) It will open upwards
c) It will intersect the y-axis at (0, -7)
d) Its axis of symmetry will be the line x = 2