This is all about Ruler Placement Postulate. Answer what is required. Provide a Clean and clear legible handwritten solutions. Minimize erasures and provide clear picture of the solutions. Thank you more power.

10.) Consider a coordinate system on a line. The points R and S have coordinates x and y, respectively. The Ruler Placement Postulate is applied, that is, the scale is shifted, so that the coordinate of R is 0 and the coordinate of S is a positive number. What will this positive number be, given that x and y are: a) x = -3 and y = 4 d.) x = 2 and y = -4 b.) x =8 and y = -2 e.) x = -4 and y = -10 c.) x = 5.2 and y = 6.1 f.) x = a and y = b