So I need help because real life problems are my literal weakness..

1. You have $20 to purchase hot dogs that cost $2 and hamburgers that cost $5. The equation 2x + 5y = 20 represents all the combinations of hot dogs (x) and hamburgers (y) available. Does equation 2x + 5y = 20 represent a linear function? Make a table, and graph to justify your claim. Then clearly state your claim and provide a complete justification.