In Session #9 we:

• reviewed graphs of basic polynomial functions such as f(x)=x^2, f(x)=x^3, f(x)=x^4 and their properties
• considered more complication graphs such as f(x)=x^4 – 6.5x^3 + 12.5x^2 -7x
• made observations about graphs such as “graphs of degree n have at most n roots and (n-1) extrema”
• pg. 117 in the text summarizes
• worked on WeBWorK homework sets