Another way of saying the same thing is that the slope is the change in y divided by the change in x. We can write this mathematically in the following form. The very descriptive title. The data points fill up the entire graph, they are not all bunched together in one corner. The data points do not fall exactly along a straight line but seem to represent a linear relationship.
Some points lie on the line, some above, some below.
Be sure that these points are NOT the original data points. Once again do not forget to add the units to the value of the slope. As we have talked about in class, this number is the approximate density of liquid mercury at room temperature in grams per milliliters. List four important points to consider when plotting a graph. In this experiment you will be working with pennies that are made, at least partially out of copper.