A square has an area of 40 units^2. Write an expression for the perimeter of the square.

=s

Step-by-step explanation:

The area of a square can be found by multiplying two of the sides of the square. So P=s*s, of "Perimeter equals side length time side length". We also know that all the sides of a square are the same side, so the perimeter of the sqaure can be found using the square by doing p=.

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: