If line AB is partitioned in a 1:4 ratio where A (-2,1) and B(4,13) what is the value of x the point of partition

“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 .