Which expression is equivaient to 4(y+2)-3y

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

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

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)