Which system is most easily solved by graphing and why? Which system is most easily solved by substitution and why?

Which system is most easily solved by elimination and why?

a. 3m - 4n = 1; 3m - 2n = -1

b. y = 4x - 2; y - 3x = 0

c. y = x; y = -x

System A should be solved by elimination because you can easily cancel out the 3m to solve.

System B should be solved by substitution.  Since the an equation for the y value is given, you can easily substitute it into the other equation.

System C should be solved by graphing.  You don't have to worry about any slopes or intercepts to graph.  You can graph it using only whole numbers.

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

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