Norma sells sports equipment. she earns a salary of $240 per week plus commission of 3% on allsales. one week she had sales of $3500. how much did she earn that week?

well, that week she earned her salary $240 plus 3% of 3500, hmmmm what is 3% of 3500?

could you give more information?

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: