# Question #8ea79

##### 1 Answer

You have three variables,

You get a 3D surface that looks like the middle graph in the image below.

If the temperature is constant and you look at the graph in a **Boyle's Law**,

If the pressure is constant and you look at the graph in a **Charles' Law**,

If the volume is constant and you look at the graph in a **Amontons' Law** (often called Gay-Lussac's Law),

Put them all together, and the 3D surface is a graph of the **Combined Gas Law**,