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HELP

function f(x) { y =  19.5/25*x; return y }

aX = 0; bX = 28; aY = 0; bY = 21
Dx = 1/2; Dy = 1/2

xx=[5,10,15,20,25]; yy=[5,10,15,20]

AX="tostato"; AY="crudo"
BX=BY=""

T0=["0",0,-0.7]; T1=["25",25,-0.7]; T2=["0",-0.7,0]; T3=["20",-0.7,20]
s0=["0",0,21.7]; s1=["500",25,21.7]; s2=["0",28.7,0]; s3=["400",29,20]