Cubic graphs A cubic equation contains only terms up to and including x 3. Here are some examples of cubic equations: y = x 3 y = x 3 + 5 Cubic graphs are curved but can have more than one change of ...

Conjecture (Berge and Fulkerson): Every 2-connected cubic graph has a collection of six perfect matchings that together cover every edge exactly twice. This conjecture is attributed to Berge in [2].