Consider the quadratic function x x 6x 8 PART A Determine the vertex and rewrite the function in vertex form 3 marks PART B Determine the y intercept 1 mark PART C Factor the expression by inspection trial and error 1 mark Use the quadratic formula to verify your answer 1 mark Using this what are the X intercepts 1 mark PART D What is the domain and range 2 marks PART E Using all points and information given in this problem sketch the graph 2 marks