Graphically

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Analyze Math, "Polynomial Functions." http://www.analyzemath.com/ function/ polynomial2/polynomial2.htm (accessed 8/15/10).

Embracing Mathematics, Assessment & Technology in High Schools; A Michigan Mathematics & Science Partnership Grant Project

Interactive Math, "Polynomial Functions and Equations." http://www.intmath.com/EqnsHiDe/1_Polynomials.php (accessed 8/13/10).

"Practice with Graphs." http://www.regentsprep.org/Regents/math/algtrig/ATE13/HighGraphsPractice.htm (accessed 8/15/10).

SOS Math, "Finding Roots." http://www.sosmath.com/algebra/factor/fac03a2/fac03a2.html (accessed 8/15/10).