A power company charges $0.19 per kilowatt-hour (kWh) and $19.84 in monthly taxes. The monthly charge, C, (in $) is given by C=0.19h+19.84, where h the number of kilowatt-hours used. If a family's bill comes to $234.92, determine the number of kilowatt-hours used.

(4,5

look up a corrdinate plane and do what the thingy says and boom

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:

step-by-step explanation:

de-gf

hj=3x+20

ji=15x-64