Check all that apply. which of the following equation is answer for the equation: sec 2x=. a. 1/cos^2x - sin^2x. b. 1/sin^2x - cos^2x. c. 1/2sin^2x - 1. d. 1/1-2sin^2x

answer: 1) twenty-seven times y

              2) twenty-seven multiplied by y

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: