All of those expressions has the same value because the value of a equation in a expression is the number after the equals sign in an expression. The main reason though is because 20/0.5=(100/10)/(5/10) and 1/0.05=(10/10)/(0.5/10)
On the coordinate plane it would be a number on the top left and point at a bottom number, the top left is the first number and on the bottom is the last number. Hope that helped!
