What is the slope of a line that passes through the points (-2,4) and (3,-1) hurry i need and answer !

What is the result of the following division?

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

Plzzz answer both questions and i will give you 100 points