The mapping diagram shows a functional relationship. ~*See mapping diagram*~
Complete the statement.
F(3) is [ -1 ]
The answer is -1

“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 .