Sketching quadratic graphs

You can sketch the graph of a quadratic function by first finding the points where it crosses the coordinate axes.
Below you can see this process in cases where the graph crosses the $$x$$-axis. Use the Next button to see the steps.

Created with GeoGebra

Sketching quadratic graphs

Construct the graph for the given equation by moving the points A, B and C so that they are the points where the graph cuts the coordinate axes. Use pen and paper for working where appropriate.

Created with GeoGebra