If the two lines below are perpendicular and the slope of the red line is what is the slope of the green line?
A. -2/5
B. 2/5
C. 5/2
D. -5/2

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Acomposition of transformations maps δxyz to δx"y"z". the first transformation for this composition is , and the second transformation is a 90° rotation about point x'.