1. Can a point on a number plane be on the x axis?
Yes, a point on the x-axis has coordinates that end in 0. e.g. (5, 0)
Similarly if a point is on the y-axis it begins with a 0. e.g. (0, 3)
2. Why is Greenwich in England the origin for longtitude and latitude?
Because the English were the people who invented the system.
3. Can a number plane include coordinates with decimals and fractions?
Yes, every point on the number plane, including those between the integer values, can have coordinates.
