I understand the whole "Teaching a man to fish" thing.
But at the end of the day, the guy's gotta be able to catch a fish.

To help prevent starvation, I need to toss in a fish here. And maybe a loaf of bread to go with it.<hr>
The Slope Intercept formula for the given data points would be ...

Y = (0.2751 * X) - 68

to do this in PBP with 1 decimal place @ 10-bit resolution ...
Code:
ADCIN 1, TempF
TempF = TempF * 2751
TempF = DIV32 1000
TempF = TempF - 680
GOSUB ShowTemp

'...

' --- Display a Signed Word with 1 decimal place ---
ShowTemp:
    if TempF.15 = 1 then LCDOUT "-"
    TempF = ABS(TempF)
    LCDOUT DEC (TempF/10),".",DEC1 (TempF//10)
Return
Bon Appetite,