What is the value of the y-coordinate of the solution to the system of equations? x-2y=1
x+4y=7

A.1
B.3
C.-1
D.4

“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 .