What is the missing reason for line 8 in this proof? Given: LM= 12 ; LZ = 3X ; MZ =X
Prove :LZ = 9

A.
multiplication property of =
B.
substitution property of =
C.
division property of =
D.
multiplication of real numbers

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:

what is the question here

step-by-step explanation: