Find the length of DE using the distance formula. d = V(x2-xx)2+(12-2012
4
The length of DE is
units.

10

Step-by-step explanation:

use the distance formula. (-4-4)^2 gives 64. (2+4)^2 gives 36. add them to get 100/ square root of 100 is 10.

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:

true

step-by-step explanation: