Answer:
C. Slope and 
Step-by-step explanation:
We're missing the graph itself, but I can make an educated guess:
- Assuming x = volume and y = mass:

density = mass/volume
x = volume = run
y = mass = rise
mass/volume = rise/run = slope
The slope of the line (assuming the graph is purely linear) represents mass/volume, which is the formula for density.
I had to Google the density of silver itself. Do the math from the graph for a more appropriate answer, as the graph may be less scientifically precise.
Answer: b/65=7/13
65/13=5
35/7=5
Step-by-step explanation:
Answer:
-8
Step-by-step explanation:
5 times -3 is -15
absolute value of -12 plus 4 is 8
-15 plus 8 plus -1 is -8
3/5 = 3/y
40 = 3y
Divide both by 3
Answer= 13.3