This webpage checks how well you understand cubics, i.e. graphs of third degree polynomial equation y = ax^3+bx^2+cx+d. If the cubic has three real roots, the equation can be written in the form y=a(xp)(xq)(xr). Below is a graph for specific values of a, p, q, r. Your aim is to find these values and plot the graph of the same function.
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For another example click When you are done, you can print this page (in landscape mode). 
