For each pair of coordinate vertices find the ratio of the x-coordinates and the ration of the y-coordinates

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Need on this geometry question. explain how you did it.

If f(x) = 6x – 4, what is f(x) when x = 8? a2 b16 c44 d52