What is law and demand

So you don’t know what law and demand is?

Law: the system of rules which a particular country or community recognizes as regulating the actions of its members and which it may enforce by imposition of penalties.

Demand: an insistent and peremptory request, made as if by right. =) there you go!

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: