Can you explain what equation and how to solve part D?

Table 1. Determining the spring constant using a static load AM (kg) x (m) Ax = x-Xo (m) F F 0.050 0.100 0.150 0.200 0.250 0.300 0.350 0.400 (d) Make a graph of your data by plotting x (in meters) on the vertical axis and AM (in kilograms) on the horizontal. From the slope of this graph, estimate a value for the spring constant k and estimate the uncertainty in the value for k. k: k =