<prompt> Tafuta y ili vekta anzapmatrix 1 -3 -4 mwishopmatrix na anzapmatrix -2 y -1 endpmatrix ni orthogonal.  <response>: Kwa vekta anzapmatrix 1 -3 -4 mwishopmatrix na beginpmatrix -2 y -1 endpmatrix kuwa orthogonal, bidhaa zao za nukta zinapaswa kuwa 0:1-2 -3y -4-1 0.Kutatua, tunapata y frac23. 