The slope of the line containing the points (-2,3) and (-3,1) is

Can someone show me the steps to solve the problem?

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

Determine domain and range, largest open interval, and intervals which function is continuous.