As we move from the outer layer (the crust) down through the layers to the very center (the inner core), think about the pressure and temperature of each layer,
1. Is the pressure increasing or decreasing? Why?
2. Is the temperature increasing (getting hotter) or decreasing (getting colder)? Why?

The pressure would increase because the gravity is coming from the core of the Earth, and the closer you get to the core, the more gravity you feel. It would be getting hotter because the core of the Earth is more like a lava ball, which allows gravity to exist.

(4,-2)

explanation:

6x+4y=16

-6x-9y=-6

-5y=10

y=-2

x=4

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)