Find Temperature Formula for Varying Thermometer

[slaw155]

Homework Statement

What is the formula that allows you to find the temperature of any given thermometer that varies its temperature with some property? For example is a pressure of 10mmHg means 0degC, what would the pressure be at 50degC?

Homework Equations

This is what I'm looking for. I used to know the equation but I've completely forgotten.

The Attempt at a Solution

I don't want the answer to my question, just the formula.

 

[NascentOxygen]

What is the formula that allows you to find the temperature of any given thermometer that varies its temperature with some property? For example is a pressure of 10mmHg means 0degC, what would the pressure be at 50degC?

You are probably looking for a proportionality relationship, assuming the relation remains linear. Most linear relationships take the general form:

T = k.x + a