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HELP

function f(x) { y = 3/5*x ; return y }
...
aX = 0; bX = 10; aY = 0; bY = 6
Dx = 11; Dy = 7
...
Q1x=[5,8]; Q1y=[3,4.8]
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AX=BX=AY=BY=""
...
AAX="0"; BBX=""; AAY="0"; BBY=""
...
T0=["5",2.5,3.4]; T1=["3",5.5,1.5]; T2=["x",3.8,5.2]; T3=["4.8",8.8,2.5]