1232. Check If It Is a Straight Line.py

class Solution:
    def checkStraightLine(self, coordinates: List[List[int]]) -> bool:
        x1, y1 = coordinates[0]
        x2, y2 = coordinates[1]

        dx =  x2 - x1
        dy = y2 - y1
        

        for i in range(2,len(coordinates)):
            x, y = coordinates[i]
            if (y - y1) * dx != (x - x1) * dy :
                return False
        return True