To be completely honest I have no clue
-1/4 i think, Y1-Y2/X1 -X2= the slope . -9-3= -12 and -6 - (-9)= -6 +9= 3. So simplify 3/-12 makes -1/4.
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Hint :
Parallel lines have same slopes.
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Cvol=hpir^2
d/2=r
10/2=5=r
h=2.3
pi=aprox 3.141592
v=2.3*3.141592*5^2
v=180.64
round to tenth
v=180.6 cubic inches
Answer: c. (2,-1)
Explanation: starting from the origin (0,0), you can see that point G is two places to the right and one down. This indicates that it is (2,-1)