The quadratic function is .

The above function compare with .

Rewrite the function .

a = 1 , b = 0 and c = 3.

The y-intercept of the equation is c = 3.

The equation of the axis symmetry is .

      (Substitute the values a = 1 and b = 0)

0                  (Simplify)

The x-coordinate of the vertex is .

The equation of the axis symmetry is 0 and x-coordinate of the vertex is 0.

Make a table of values that includes the vertex.

Graph of the quadratic function is

Draw a coordinate plane.

Plot the points.

Draw a smooth curve through this points.

The y-intercept of the equation is c = 3 and The equation of the axis

symmetry is 0 and x-coordinate of the vertex is 0.

The graph of the quadratic function is