Help plz/ porfabor ayuda T^T

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

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)

What is the point slope form of a line with slope -5 that contains point (2,-1)