At
![T=0^{\circ}C](/tpl/images/0116/1359/a2596.png)
, the volume of the gas is V=22 L.
At temperature
![T=1C](/tpl/images/0116/1359/7e4f3.png)
, the volume of the gas is (22+225) L.
This means that if we increase the temperature by
![k](/tpl/images/0116/1359/cc0ac.png)
degrees:
![T=k^{\circ}C](/tpl/images/0116/1359/5235f.png)
the volume of the gas is
![V=22 + 225 k [L]](/tpl/images/0116/1359/968eb.png)
(1)
Since T=k, we can rewrite eq.(1) as
![V= 22 + 225 T [L]](/tpl/images/0116/1359/02bdb.png)
which gives the expression for the volume of the gas in liters, as a function of the temperature T in Celsius.