So you need learn how to create a graph. First we have to come up with what you need to show in your graph. We need to determine the timeline and the object. Is it going to be in currency or in weight, or maybe even in quantity? Lets say you are making a timeline of 1 month, and the object is gas usage. In this graph you will see the fuel mileage return. This might help you with the planning of your car allowance. So in the bottom we will have to make a line for days and on the left hand side we will have to make a line for gallons. This is the beginning of how to create a graph. What you would need to do now is make sure that you fill your tank at the end of every day. This is to ensure that we have the right data every day on how much is used.Now that we have everything in place to start our experiment on gas usage we can start our project. So when you fill up your tank at the end of the day, don't forget to get a receipt for the gas. This will make adding it to your graph a lot easier. So let's say that you have done the math for the last month and you have filled in the dots on your graph at night. Then the next logical step to make in how to create a graph is to trace a line between the dots and simply connect them. What you have now is a perfect overview of the gas used in the last month. To do it more precisely you can do the same thing over each month all year.