Well, we don't really need to find what point B is
find the equation of the line containing (0,0) and (10,-5) if the slope is 1, then point B is equidistant from the x and y axis if the slope is greater than 1, then point B is closer to the y axis if the slope is less than 1, then point B is closer to the x axis
slope between (0,0) and (10,-5) is (-5-0)/(10-0)=-5/10=-1/2 the slope is less than 1 it is closer to the x axis