I need assistance ASAP

Which statement best describes a square? a. a special rectangle that has four right angles b. a special trapezoid that has four sides of equal length c. a special rectangle that has four sides of equal length d. a special trapezoid that has four right angles

Plz which expression is equivalent to the expression below?

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