The graph represents the number of games (\displaystyle xx) that Anthony downloads, and the cost (\displaystyle yy). Use the graph to answer the following:
1. What equation is represented by the graph?
2. How much does Anthony pay for 2, 5, and 7 game downloads? Write as ordered pair \displaystyle \left(x, y\right)(x, y) .
3. Write a sentence describing the cost if Anthony downloads and buys 10 games.