Each day Julian gives his dog, Banjo, 3 liters of water and 500 grams of food. Julian wants to track the total amount of the food and water he gives Banjo for one week. Julian plots a point at (3, 500) to represent the first day on a coordinate grid.

Then Julian uses a pattern to plot six more points.

To plot the next six points, we need to follow the given pattern.

Each day, Julian gives Banjo 3 liters of water and 500 grams of food. This means that as the days go by, the amount of water and food Banjo receives will keep increasing in the same increments.

Starting with the point (3, 500), we can determine the coordinates for the next six days using the pattern:

Day 2: (6, 1000)
Day 3: (9, 1500)
Day 4: (12, 2000)
Day 5: (15, 2500)
Day 6: (18, 3000)
Day 7: (21, 3500)

We can plot these points on a coordinate grid to track the total amount of food and water Julian gives Banjo for one week.