• a polynomial function is any function written as a fraction, where y = f(x)/g(x)

Graphing Rational Functions Using a Graphing Calculator

• when inputting a rational function into your graphing calculator, you must put brackets around the numerator and denominator
• WRONG y = (x + 2)^2 - 3 / x + 1
• RIGHT y = ((x + 2)^2 - 3) / (x + 1)
• WRONG y = x^2 - 3x + 1 / x - 2
• RIGHT y = (x^2 - 3x + 1) / (x - 2)