Graphs of quadratic functions can be used to solve equations. Example. Draw the graph of \(y = 2x^{2} + 2x – 4\) for values of –3 to 2. Use the graph to solve the equation \ ...

Solving quadratic equations - Eduqas Graphs of quadratic functions. ... Example. Draw the graph of \(y = x^2 -x - 4 \) and use it to find the roots of the equation to 1 decimal place.

Ivan Baggs, Functions with a Closed Graph, Proceedings of the American Mathematical Society, Vol. 43, No. 2 (Apr., 1974), pp. 439-442 Free online reading for over 10 million articles Save and organize ...