sequence
Are the two examples the same topology? That is, is the resistor at the transistor end of the line with the other end of the line shorted?
I can see the second example being this type. The line looks like an inductance which is in series with the resistance to produce the complex impedance.
The first example looks like putting the resistor on the other end of the line relative to the end against the transistor. It is almost a quarter wave line which would transform the resistor to another resistance if it was a quarter wave. Since it is slightly off, the impedance transformed to has a slight reactance.
In both cases, the line impedance is an important factor.