Which is a y-intercept of the continuous function in the table

Shown here are the three essential steps in a proof of the pythagorean theorem. comparing the 1st and 3rd steps how are the colored regions related as to the areas? a. yellow+blue=orange b. orange=yellow=green c.yellow+blue=green=orange d.yellow+green=orange+blue

Work background to the to find value of the variable in the equation below d - 4 = 23

Ys is the perpendicular bisector of xz what it is the length of xs