Step 7: Make a plot of weight versus mass, using the mass values in kilograms. As Is always the case, the first variable listed in the title of the graph constitutes the vertical axis and the second variable constitutes the horizontal axis, Generally speaking, the first variable listed Is the dependent variable (the one you measure during the activity) and the second variable is the independent variable (the one you control during the activity). Step 8: Title the graph, label the axes to correctly Indicate the quantity, units, and scale of each axis. Step 9: Draw a straight line of best fit through the data points plotted on your graph. 1. Determine the slope of your best-fit line and record it below. Slope: 2. What are the units of the slope you found? The slope does have units! Show the units in your answer to the previous question. The slope of the graph is the relationship between weight and mass. The slope tells how many newtons of weight pull down on each kilogram of mass