Please help me on these

The mass and volumes of five pieces of hafnium are measured and are given in the table below. + Mass (g) Volume (mL) 160 240 320 400 Draw a graph of mass (M) on the vertical axis and volume (V) on the horizontal axis. Do the scatter plot and then do the trend line. Choose two points on the trend line (do not use data points) and measure AV, the change in volume and AM, the corresponding change in mass and write them down using their correct units. AV =............. AM = .. .. ........ m Calculate the slope of the graph and write it using the correct units. Slope of the graph = What is the relation between the slope of the graph and the density of hafnium? Attach your graph with this worksheet *Complete this worksheet and upload it into the Assignment Folder