
### Canonicalized Input Description:

An integer N (1 ≤ N ≤ 10^3), representing some quantity or size.
A list of tuples P of size N, where each tuple consists of two integers (x, y) representing coordinates, and each integer is between -10^4 and 10^4.
A string L, representing a line equation in the format "ax + by + c = 0", where a, b, and c are integers (-10^4 ≤ a, b, c ≤ 10^4).

### Example Input:

```
3
1 2
-3 4
5 -6
3x + 4y + 2 = 0
```

### Function Signature:

Write a function f(N, P, L) that takes in the input.
def f(N: int, P: List[Tuple[int, int]], L: str):
    '''
    N: an integer
    P: a list of tuples, each containing two integers
    L: a string representing a line equation
    '''