Find the volume of a cube whose length is 5cm

The answer is 125.

Step-by-step explanation:

The formula for volume of a cube is s^3, where s is the length of a side. (Weirdly, you cube a cube.)

So, when you cube 5, the answer is 125.

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:

2nd one in the first row is correct