Dilate △QRS if Q(-1,0), R(-1,2), S(-2,1) by a scale factor of 2 from the origin. Help plzzz

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .

Add the cents that add the left overs to get the first number