Please guys If you are really good at math can you please help me with my classwork

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose