Given a(-1,4), b(1,5), and c(6,1), which are the coordinate will make ab parallel to cd

3(10x-y)-5(x-y^2) need this solved asap

Which is the completely factored from of xy^3-x^3y

How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142