What pattern will result from plotting all points (x, y) that satisfy an equation in form of ax+by=c

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

Which point lies on a circle with a radius of 5 units and center at p(6, 1)?

How do i put 3(x+7) in distributive property