What is the answer to -3/4+1/8 in simplest form?

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

Ineed i been stuck on this question since yesterday

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?