Which expression is equivalent to 27x? + 125? A)
(3x - 5)(9x2 - 15x + 25)
B)
(3x - 5)(9x2 + 15x – 25)
(3x + 5)(9x2 - 15x + 25)
D)
(3x + 5)(9x2 + 15x – 25)

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:

t

step-by-step explanation:

ever thing time 1 is a multiply by 1 it get