"gradiant" be the slope=tangent=dy/dx
Hav no idea wot A or S mite be...perhaps 2 points on a kerv???????
me sorta ges yu sae slope=2, but yu hide it good in mung lotta nois
slope=deltay/deltax
me assume point1=(-4,2n) & point2=(-1,n)
deltax=from -4 tu -1...3
deltay=n-(2n)=-n
slope=2=deltay/deltax=-n/3
n=-3*2=-6