Help i dont know how to do this

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

What is the slope of the line (-7,2) (4,6)

Acone is placed inside a cylinder. the cone has half the radius of the cylinder, but the height of each figure is the same. the cone is tilted at an angle so its peak touches the edge of the cylinder’s base. what is the volume of the space remaining in the cylinder after the cone is placed inside it?