user39436 user39436 03-06-2024 Mathematics Answered the points A(-4;0), B(3;7), and C (4;-1) form a triangle on the Cartesian plane. 1. prove that triangle ABC is an isosceles triangle. 2. find the co-ordinates of D ( D lies on AB). 3. determine whether DCLAB show all working. 4. prove that AB/AD=4/7