For each of the following pairs of goods, identify if they are substitutes or complements and use a graph to illustrate how the change described impacts the markets for both goods or services.

1. Gasoline and sport utility vehicles: The price of gasoline increases.
2. Taking a train or plane between NYC and Washington, DC: The price of airfare increases.
3. A smartphone and a Verizon data plan: The price of a monthly data plan increases.