Which quadrant does this belong to? math question?

Question

xy < 0

does anyone know which quadrant it would lie in? and can u show work or proof to support it?

Answer 1

That will be true when x and y have opposite signs. And that is in the second and fourth quadrants.

Answer 2

I am not so sure what your question is, but in your case there are two valid quadrants, for which xy<0; They are either when x<0 OR y<0, but NOT both x,y<0 - right? because negative x negative = positive.
If we talk the regular standards, then this is true in the second and forth quadrants.

Answer 3

If xy<0

For xy < 0 must have either but not both x<0 or y<0 (i.e. x and y must have different signs)

So either x<0 and y>0 (bottom right or second quadrant)
Or x>0 and y<0 (top left or fourth quadrant)

Answer 4

second and fourth excluding the axis.