What is the formula for volume of a cone? A) v= area of Base *Height
B) v= 3* volume of a cylinder
C) v=1/3 *volume of a cylinder
D) v=1/3 * Pi r^2

D

Step-by-step explanation:

The volume of a cone =

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below: