10 REM MAP RANGE
20 REM COMMODORE BASIC 2.0
30 REM ================================
40 A1 = 0 : A2 = 10
50 B1 = -1 : B2 = 0
60 DEF FN MR(S)=B1+(S-A1)*(B2-B1)/(A2-A1)
70 FOR S=0 TO 10
80   PRINT S;"MAPS TO ";FN MR(S)
90 NEXT