Kiara's grandmother bakes and sells cakes for special occasions. Kiara recently discovered a ledger containing the following data. If x represents the number of cakes, and f(x) is the total amount of dollars charged, then what is the rate of change in the data, in dollars per cake

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:

the f

last graph i believe

step-by-step explanation:

worked it out i believe