In which quadrant does the point(0, 9) lie

In which quadrant does the point(-7, 6) lie

In which quadrant does the point(9, -2) lie

In which quadrant does the point(1, 5) lie

In which quadrant does the point(-4, -7) lie

 If μ_r be the rth order central­moment of a population μ₀ , μ₁  and μ₂  are : (where, σ = standard deviation)