Part III. Problem Solving (10 points) At a gas station along the highway, gasoline costs P61.00 per liter. Let x represent the number of liters and y the cost of x liters. . 1. Prepare a table of values for x and y where x = 3 liters; 6 liters; 9 liters; 12 liters; 15 liters. 2. Write an equation describing the relation in the table. 3. Construct a graph using the values from the table in number 1.