What is the relationship between perpendicular lines? Include a description of the slopes in your explanation.

The ratio pv to nrt is plotted against pressure for ch4 at 0°c and 200°c. why does the curve for 0°c drop below the horizontal line for an ideal gas whereas the curve for 200°c does not?

Sum is 17 and their difference is 3

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?