The parabola opens downward and therefore the vertex is its maximum point. We see the vertex is the point Next, we will find the equation of the axis of symmetry. The axis of symmetry is the vertical line through the vertex, and divides the parabola into congruent halves.
The equation of the axis of symmetry is Finally, we will find the intercept knowing that the intercept, which is the point where the graph intercepts the axis.
As we can see, the intercept is located at