What are the unknowns in this problem?
a problem states: "there are 2 more horses than cows in a field. there are 15 animals in the field in all. how many horses are there in the field? "
select each correct answer.
the total number of animals in the field
the total number of cows in the field
the total number of horses in the field

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: