\font\largestbold = cmbx10 scaled \magstep2
\font\largerrm =cmr12 scaled \magstep2
\def\zf#1, #2 {\centerline{\vrule height .02in width 2in}\vskip .1in
\centerline{x=#1, \ y=#2}}
\nopagenumbers
\font\sc=cmcsc10.tfm
\magnification=\magstep1
\nopagenumbers

\largestbold

\zf -20, 1063 
\zf -19, 978 
\zf -18, 897 
\zf -17, 820 
\zf -16, 747 
\zf -15, 678 
\zf -14, 613 
\zf -13, 552 
\zf -12, 495 
\zf -11, 442 
\zf -10, 393 
\zf -9, 348 
\zf -8, 307 
\zf -7, 270 
\zf -6, 237 
\zf -5, 208 
\zf -4, 183 
\zf -3, 162 
\zf -2, 145 
\zf -1, 132 
%\zf 0, 123 
\zf 1, 118 
\zf 2, 117 
\zf 3, 120 
\zf 4, 127 
\zf 5, 138 
\zf 6, 153 
\zf 7, 172 
\zf 8, 195 
\zf 9, 222 
\zf 10, 253 
\zf 11, 288 
\zf 12, 327 
\zf 13, 370 
\zf 14, 417 
\zf 15, 468 
\zf 16, 523 
\zf 17, 582 
\zf 18, 645 
\zf 19, 712 
\zf 20, 783
\bigskip
\vfil
$f(x)= 123-7x+2x^2$


\vfil\eject\end


[-20, 1063], 
[-19, 978], 
[-18, 897], 
[-17, 820], 
[-16, 747], 
[-15, 678], 
[-14, 613], 
[-13, 552], 
[-12, 495], 
[-11, 442], 
[-10, 393], 
[-9, 348], 
[-8, 307], 
[-7, 270], 
[-6, 237], 
[-5, 208], 
[-4, 183], 
[-3, 162], 
[-2, 145], 
[-1, 132], 
[0, 123], 
[1, 118], 
[2, 117], 
[3, 120], 
[4, 127], 
[5, 138], 
[6, 153], 
[7, 172], 
[8, 195], 
[9, 222], 
[10, 253], 
[11, 288], 
[12, 327], 
[13, 370], 
[14, 417], 
[15, 468], 
[16, 523], 
[17, 582], 
[18, 645], 
[19, 712], 
[20, 783]


