Which statements are true check all that apply please help

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

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

What is the result of adding the system of equations? 2x+y=4 3x-y=6