What is the y-value of the solution to the system of equations? 3x + 5y = 1 7x + 4y = −13

Ineed with math stuff it involves graphs

Im so bad at fractions they are not my best math thing to work on

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.