# There is a linear relationship between volume, V, and absolute temperature, TK, for an ideal gas at constant pressure....?

## If the constant is positive, which graph could represent this relationship?

Jan 24, 2018

Last one

#### Explanation:

The formula of Volume(V) vs Temperature(T) in Kelvin scale for an ideal gas at constant pressure and mass is $\frac{V}{T}$ = constant=$c$

Or, $V = c T$

Now,compare this with $y = m x$

That means,this is an equation of straight line,passing through origin,so the correct choice is the last option.

So,here $c$ is the slope of the curve i.e $\tan \theta = c$