Integers are very important when it comes to having to learn how to graph. Take a plain graph that looks like this. Image    Then looking at this graph, it has both positive and negative integers on it so you are able to know where to make the point on your graph. Try plotting the point -3, 4. So what you would do is on the x-axis which is the line that goes straight across. You are going to be looking for the negative 3, then on the y-axis, which is the line that goes straight up and down, you are going to find the positive 4. Make the plot and there you have it.