a. Find the slope of x + y" - 126xy = 0 at the points (5,25) and (25,5). b. At what point other than the origin does the equation have a horizontal tangent? c. Find the coordinates of the point other than the origin where the equation has a vertical tangent. . . . 205 a. The slope of x + y - 126xy = 0 at the point (5,25) is 83 (Type an integer or a simplified fraction.) 83 The slope of x + y - 126xy = 0 at the point (25,5) is 205 (Type an integer or a simplified fraction.) b. The equation has a horizontal tangent at the point (x,y) = (Type an ordered pair. Type an exact answer, using radicals as needed.)