Quadratic Functions I - For each of the following quadratic functions: a. Express in the form f(x) = a(x -h) + k by completing the square. b. On what intervals is fincreasing and decreasing? c. Identify the maximum or minimum value of f. d. Write the equation of the axis of symmetry. e. Sketch the graph of f . Label the vertex, y-intercept, and axis of symmetry. f. Find the domain and range of f. 9. f(x) =3x2 -12x+13 10. f(x) =2x2+16x+33 3 11. f(x) =-2x2+12x-15 12. f (x) = -4x2 +40x-97 3= 6( 0 ) 3