To see how to make a table of values for a quadratic equation check out this tutorial. That way you can pick values on either side to see what the graph does on either side of the vertex. Quadratic Equation A quadratic equation is of the form ax 2 bx c 0 where a 0.
If x 2 then.
To find out if the table represents pairs of a quadratic function we should find out if the second difference of the y-values is constant. A quadratic equation can be solved by using the quadratic formula. This corresponds to the x -values where f x is 0 in function notation. For example 1 5 211 and 319.