Sketch the following polynomial function using the following step-by-step process. f(x)equalsnegative 3 left parenthesis x minus 3 right parenthesis squared left parenthesis x plus 3 right parenthesis Question content area bottom Part 1 a. Determine the end behavior of the graph of f. The left-hand behavior starts up and the right-hand behavior ends down. Part 2 b. Determine the y-intercept. The y-intercept is yequals negative 81. Part 3 c. Determine the real zeros and their multiplicities. The real zeros of the polynomial are xequals 3,negative 3 (Use a comma to separate answers as needed. Type an exact answer, using radicals as needed.) Part 4 The multiplicity of the zero located farthest left on the x-axis is enter your response here