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function f(x) { y =  -2.9*x*x + 46.5*x -0.1218; return y }

aX = 0; bX = 8; aY = 0; bY = 190
Dx = 1; Dy = 10

Q1x=[0,0.5, 1,1.5, 2,2.5,  3,3.5,  4,4.5,  5,5.5,  6,6.5,  7,7.5,  8]
Q1y=[0, 22,44, 63,81, 98,113,128,139,151,160,168,174,180,183,185,187]
xx=[5]; yy=[50,100,150]

AX=BX=AY=BY=""

AAX=aX; BBX=bX; AAY=aY+" "; BBY=bY