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so x=xand y=poundswhen x=0, y=64when x=1, y=63.1to find slope, (y1-y2)/(x1-x2)=(64-63.1)/(0-1)=0.9/-1=-0.9=slopey=-0.9x+bsubsitute64=-0.9(0)+bb=64y=-0.9+64so int 2001, x=11y=-0.9(11)+64y=-9.9+64y=54.1