Billy and maria ordered flyers to advertise the school dance. flyers cost $8.75 for the
first 50, and $1.50 for each additional 10. the bill was $19.25. how many flyers did
they order?

120

because they got 50 for 8.75 and if you add 1.50 until you get to 19.25 you would get 120

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: