The equation is .

Find axis of symmetry:

Formula for the equation of the axis of symmetry:  .

                   (Substitute )

                         (Apply multiplicitive identity property: )

                            (Divide: ) The equation for the axis of symmetry is .

Find vertex:

Use the value you found for the axis of symmetry as the  x - coordinate of the vertex.

To find the y-coordinate, substitute that value for x in the original equation.

  (Substitute )

        (Evaluate powers: )

               (Multiply: )

                   (Subtract: )

                              (Add: )

The vertex is at .

Find y-intercept:

The graph is observed that,

The y-intercept is the point where the graph intersects the y-axis. It is located at (0,10), so the y-intercept is 10.

The equation of the vertex is , the axis of symmetry is  and y-intercept is 10.