Write down the matrix equation ????????=????Ar=Y which corresponds to this system of linear equations. Each row corresponds to one game, and each column corresponds to a team. Write the vector ????Y such that each entry is positive. For example, for Game 1, in the since Team B won and Team A lost, we will put a "1" in the frst row in the B column, and a "-1" in the A column, and "0"'s in the rest of row 1. The score difference was 3, so a 3 will be the first entry of ????y. ????????????????ABCD ????????????????1????????????????2????????????????3????????????????4????????????????5????????????????6−1100????????????????????????????????=3Game1Game2Game3Game4Game5Game6(−1100)(rArBrCrD)=(3) Enter the matrix A below as a (6,4) numpy array, and the vector Y as a (6, ) numpy array. Although the order of the rows doesn't matter for a system of equations, the rows of your matrix should be ordered according to the game order above for grading purposes. The resulting matrix is called the Massey Matrix.