Quadratic codes are polynomial equations -- often represented by the formula "ax²+bx+c=0." While these equations can be solved by hand, it's a time consuming task susceptible to many errors. An easier alternative is to solve a quadratic equation using a calculator to input the equation and graph it. To do this, you will need a graphing calculator, such as a TI-83 or greater. Scientific calculators will not allow you to graph quadratic functions.
Instructions
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1
Write out your quadratic problem in the quadratic formula, meaning it will appear as "ax²+bx+c=0."
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2
Turn on your calculator and press "Y=" to open the graphing function.
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3
Input your quadratic problem into your calculator on the line that says "\y1=". Your equation should appear in the calculator as:
\y1=ax²+bx+c
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Press "Graph" to graph the function.