What is coefficient of thermal conductivity?

Explanation:

The amount of heat energy of any material  to get moved per meter length for per unit change in temperature is called coefficient of thermal conductivity.

The value of coefficient of thermal conductivity is different for different materials.

because it says use -2,0,and 2 for x, we can plug those numbers into the equation. y/4=3/4(-2)+2   y/4= -1 1/2 +2 now to get x by itself, we can multiply each side by 4. y=-6+8 which equals y=2 when x=-2. now you can do the same thing with 0 and 2 as x. you get y=8 when x=0 and y=14 when x=2.

x   |   y

-2 |   2

0   |   8

2   |   14

second mirror gathers light from a faraway object and reflects it to another mirror. - a.