with 2 points, assume strate line
y=mx+b
at x=4, y=6...or 4m+b=6
at x=33, y=-197 or 33m+b=-197
(33m -4m)+(b-b)=-197-6
31m=-203
m=6.548387
4m+b=6...4*(6.548387)+b=6, b=6-26.193548, b=-20.193548
at x=41, yu get 6.548387*41 -20.193548
=268.483867 -20.193548
=248.290319