Determine the equation of the quadratic function using the following data points (0,12), (1,6) and (-2, 10). Find the concavity of the given quadratic function, find its x-intercepts, y-intercepts,...

Determine the equation of the quadratic function using the following data points (0,12), (1,6) and (-2, 10).

Find the concavity of the given quadratic function, find its x-intercepts, y-intercepts, and vertex and plot the parabola. Prove that graph represents a function.