The graph given shows the cost of sandwiches at a sandwich shop. Cost ($) 40 35 30 25 15 10 5 y 0 2 4 6 8 Number of sandwiches In the graph, y represents the cost of sandwiches and x represents the number of sandwiches sold. Which equation describes the proportional relationship between the cost of sandwiches and the number of sandwiches sold?
1 answer
The equation that describes the proportional relationship between the cost of sandwiches and the number of sandwiches sold is y = -5x + 45.