On the right.
PLEASE NOTE - the actual answer depends on your country. Every country has its own traffic laws. Re-ask the question giving a specific country please.
approaching an incline
That depends on the country in which you live. Some countries drive on the left, others drive on the right and this will affect which side you pass another vehicle.
Never. The only time you can pass another vehicle on the right is if there is a lane on that side you can go into to pass it.
A vehicle should not pass another vehicle on a grade unless the maneuver can be completed in less than one-half mile. This is important for safety, as visibility and road conditions can be limited on inclines, making it harder to judge the distance and speed of oncoming traffic. Drivers should prioritize caution and ensure they have ample space to complete the pass safely.
No, it is not legal to pass another vehicle by going over the speed limit.
No. If the vehicle you are passing is going at the correct speed, why should you need to overtake. When overtaking a vehicle you should ensure there is enough clear road ahead of you to pass the vehicle without over speeding. If this is not the case you should not attempt an overtaking manoeuvre.
pass another vehicle.
Less than 1/4 mile
whichever vehicle was the one traveling uphill
You can, but you may not!
100
In practice, It is acceptable to increase the speed of your vehicle over the legal speed limit to pass or overtake another vehicle. Legally, it is not permitted. If the other vehicle is already at the speed limit, you should not be passing it. If it were a police car you were passing, at any speed above the speed limit, they could stop you.