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Drawing graph of the quadratic equation

How to draw graph of quadratic equation? In this topic we will teach you quadratic functions drawing technique.

Let's draw example graph of $y=2x^2-3$. First of all, we can made y value table with random x values. Don't take big numbers, because it will be difficult to drop them on the plane coordinate system. Here is our table:

\begin{array}{|c|c|c|c|c|c|} \hline x & -2 & -1 & 0 & 1 & 2 \\\hline y & 5 & -1 & -3 & -1 & 5 \\\hline \end{array}

Now we can drop the points from our table on the plane coordinate system and draw graph of quadratic function - parabola.



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