Plotting a graph takes time. Often mathematicians just want to know the key features. These are: shape, location and some key points (such as where the graph crosses the axes or turning points).

The questions in this quiz are suitable for GCSE maths students studying quadratic graphs, cubic graphs, reciprocal graphs, exponential graphs - Higher, The equation of a circle - Higher,the equation ...

If true, the following conjecture of Thomassen [Th81] is a planarity criterion for a special class of graphs that involves only K 5. Recall that a planar graph on n vertices contains at most 3n-6 ...