Urgent ! i dont understand anything of this and this is for tomorrow

Basically, the graph shows a linear (line) relationship with mass and volume. The slope will equal the density of the substance because mass/volume is the equation for density. Your paper is a bit unclear, but I can understand this much, Hope this helped a little bit :)

by cartels in other countries, shipped by air, mail, or land. i cant really see your answer choices : /